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锡业股份:环境、社会和公司治理(ESG)报告(英文版) 下载公告
公告日期:2024-04-12

2023Environmental, Social, andGovernance (ESG) Report

CONTENTS

About This ReportResponsibility StatementIntroduction to Yunnan TinThe Company's Journey Towards SustainabilitySpecial Topic:Leading High-Quality IndustryProcess Development through Digital Intelligence

Guarding the Earth andDrawing a Picture ofGreen Prosperity

BiodiversityTailings Pond ManagementClimate Response ActionsMineral Resources Protection

Leading with EnvironmentalResponsibility and GreenMission

Environmental ManagementResource ManagementEmission ManagementEnvironmental Safety

Steady Operation andLaying a Solid Foundationfor DevelopmentCorporate GovernanceInvestor Relations ManagementCompliance and Risk ManagementParty Building Leadership

Lean Management -Empowering DiverseValues

Industrial Chain ManagementTechnological InnovationQuality ManagementIndustry Cooperation

Caring for Employeesand Ful?lling MissionResponsibilities

Talent Acquisition and DevelopmentEmployee Compensation andBene?tsEmployee Health and SafetyCommunity Communication andPublic Welfare

Key PerformanceIndex of IndicatorsIndependent AssuranceOpinion Statement

About This ReportReport Overview

This is the 16th Environmental, Social, and Governance (ESG) and Social Responsibility Report published by YunnanTin Co., Ltd. The report discloses the Company's development practices and major achievements in environmental,social, and corporate governance responsibilities for the year 2023. It aims to provide shareholders, creditors,partners, employees, and other stakeholders with a comprehensive understanding of the Company's socialresponsibility activities.The Board of Directors and all directors of the Company guarantee that there are no false records, misleadingstatements, or significant omissions in this report. They bear individual and joint legal responsibility for thetruthfulness, accuracy, and completeness of its contents.Time Frame

The report covers the period from January 1, 2023, to December 31, 2023. To enhance the comparability andcompleteness of the report, some content appropriately refers to previous years and includes relevant post-2023events.

Report TerminologyYunnan Tin Co., Ltd. (hereinafter referred to as "Yunnan Tin" or "the Company"); Datun Tin Mine Branch of YunnanTin Co., Ltd. (referred to as "Datun Tin Mine"); Laochang Branch of Yunnan Tin Co., Ltd. (referred to as "LaochangBranch");Kafang Branch of Yunnan Tin Co., Ltd. (referred to as "Kafang Branch") ;Tin Branch of Yunnan Tin Co., Ltd.(referred to as "Tin Branch"); Copper Branch of Yunnan Tin Co., Ltd. (referred to as "Copper Branch");Yunnan HualianZinc Indium Co., Ltd. (referred to as "Hualian Zinc Indium"); Wenshan Zinc Indium Smelting Co., Ltd. of Yunnan Tin(referred to as "Wenshan Zinc Indium"); Smelting Branch of Yunnan Tin Co., Ltd. (referred to as "Smelting Branch");Yunnan Tin New Materials Co., Ltd. (referred to as "Yunnan Tin New Materials Co., Ltd.").

Basis for CompilationSDG CompassGRI Standards of Global Reporting InitiativeCASS-ESG 5.0GB/T 36001-2015 Guidance on social responsibility reportingSASB StandardsHong Kong Stock Exchange's Environmental, Social and Governance Reporting GuideResearch on Preparation of ESG Special Report of Listed Companies Controlled by Central State-owned EnterprisesShenzhen Stock Exchange Social Responsibility Instructions to Listed CompaniesSelf-regulatory Guidelines of Shenzhen Stock Exchange for Listed Companies No.1 - Standardized Operation of MainBoard Listed Companies

Report Acquisition

This report is published in electronic format and can be accessed on the Shenzhen Stock Exchange website (http://www.szse.cn) and the o?cial website of Yunnan Tin Co., Ltd. (http://www.ytl.com.cn/).Contact Us

If you have any comments or suggestions regarding the Company's environmental, social, and governance work,please feel free to contact us:

Email: xygfzqb@qq.com; 342748293@qq.comTel.: 0871-66287901; 0871-66287902Company Name: Yunnan Tin Co., Ltd.Address: No.471, Minhang Road, Guandu District, Kunming, YunnanPostal Code: 650 216

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2023 Environmental, Social, and Governance (ESG) Report

0102

Responsibility StatementThe year 2023 was marked by an increasingly complex and severe global situation. Intensified geopolitical conflicts, intricate changes in the internationallandscape, weakened momentum for world economic growth, frequent extreme weather events, record-breaking global high-temperature days, and anescalating climate crisis characterized the year.In this context, the importance of adhering to sustainable development has been underscored. The state hasissued a series of top-level designs, such as achieving peak carbon emissions and carbon neutrality, promoting common prosperity, revitalizing rural areas, andensuring the security of national strategic resources, all in a relentless pursuit of sustainable development actions.The origins of Tin Co., Ltd. can be traced back to the Guangxu period of the Qing Dynasty, giving it a history of 141 years. The Company has always been a firmbeliever in sustainable development, convinced that managing its relationship with the environment, solving societal problems, and focusing on long-termcorporate governance can unleash boundless potential.Throughout its history, the Company has used ESG as a yardstick to measure value and manage risk,driving itself to adopt effective and sustainable long-term action strategies.In the past year, in response to Yunnan Province's "3815" strategic development goal, the Company has invested significant energy and time in ESG work. It hasactively explored how to better serve ESG through digitalization, how to better integrate ESG into the Company's production and operation, , and how to betteraddress societal issues. The Company has prioritized the advancement of intelligent mining and digital smelting, the construction of a large data platformfor the tin industry, and the creation of a unified collection, management, analysis, application, and visualization of data across the entire tin industry chain,thereby setting a digital benchmark for the industry. It has ensured the safety of national strategic key minerals such as tin and indium, increased the stabilityof the tin supply chain, and strived to become a comprehensive, high-quality development listed company that actively integrates into national strategy,demonstrates outstanding innovation ability, and adheres to standardized corporate governance.As a state-owned holding listed company with Chinese characteristics, the Company continuously optimizes the governance structure of state-ownedenterprises, improves the governance mechanism of modern enterprises, strives to enhance the standardized governance level of listed companies,continuously improves the quality of information disclosure, strengthens two-way communication channels with the capital market, enhancescommunication with investors from multiple dimensions, explores and practices diversified equity financing, optimizes the Company's capital structure, andaccelerates the implementation of the "three pillars" of governance: internal control, risk management, and compliance.Furthermore, the Company has integrated broader environmental issues such as biodiversity, natural resource conservation, and tailings dam safety into itsoverall sustainable development plan, contributing to the global carbon reduction effort with the power of the tin industry. To fully enhance its sustainabledevelopment capabilities, the Company has established a mine management center. It has implemented specialized, professional, modular, and standardizedmine management, coordinated the upgrade and transformation of mining mechanization and ore dressing automation, strictly controlled safety andenvironmental protection risks, fully consolidated responsibilities, and made every effort to solidify the hardware foundation of safety and environmentalprotection, and enhance the soft power of safety and environmental protection.Simultaneously, the Company seeks a multi-value win-win situation for all stakeholders, accelerates the improvement of the tin supply chain due diligencemanagement system, promotes transformation and upgrading through technological innovation, concentrates efforts and high-quality resources on tacklingkey technology problems through key technology breakthroughs and digital transformation upgrades. It insists on building a "ecosystem" of co-construction,sharing, and win-win, actively deepens exchanges and cooperation in the upstream and downstream of the tin industry, promotes the positive developmentof the industry, and actively seeks measures to improve the quality of products and services to continuously meet customer needs.The Company explores and pursues a broader boundary of its own social responsibility, including strengthening the training of cadres and talents, promotingthe construction of talent echelons, creating a multi-channel career development system for employees, further promoting the inclination of salary distributionto value creators, and striving to create an equal, dignified, and inclusive work environment for employees. It continues to consolidate and expand theachievements of poverty alleviation and effectively connect with rural revitalization, making public welfare an important force in solving sustainable problems.2024, the macroeconomic operation still faces many challenges. Geopolitical conflicts continue, inflation in developed economies remains high, and the globalmacro-economy is complex and changeable. ESG is not only a choice to go with the flow, but also an active exploration to create the future.As a listed companyin the entire tin industry chain, Yunnan Tin will issue ESG reports every year, disclose the Company's ESG phased objectives, actions, and progress to the public,and continuously promote the Company to become a state-owned holding listed company with higher development quality.

Introduction to Yunnan Tin

Yunnan Tin Co., Ltd. (hereinafter referred to as "Yunnan Tin" or "the Company") is a state-owned listed company controlled byYunnan Tin Group (Holding) Co., Ltd. In 1998, with the approval in the document of YZF [1998] No.99 of the People's Governmentof Yunnan Province, the Company was established by the Yunnan Tin Company, Gejiu Xidu Nonferrous Metal ProcessingFactory, Gejiu Yinguan Tin Arts and Crafts Factory, Gejiu Tin Resources Industrial Company, and Gejiu Juyuan Industrial andMining Company as sponsors.In October 1999, it was approved by the China Securities Regulatory Commission to issue 130 million RMB ordinary shares tothe public for the ?rst time. The Company was listed on the Shenzhen Stock Exchange in February 2000, with the stock referredto as "Yunnan Tin Shares" and the stock code: 000960. It is the only A-share listed company with a complete tin industry chain.The Company has an integrated industrial structure that spans the entire supply chain of exploration, mining, mineralprocessing, and smelting of non-ferrous metals such as tin, indium, zinc, and copper. The reserves of tin and indium resourcesrank first in the world. The Company is a leading enterprise in the world's tin industry, has the largest tin production andprocessing base in China, possesses the longest and most complete tin industry chain in the world, and represents the leadinglevel of the world's tin industry.The Company's main products are tin ingots, cathode copper, zinc ingots, die-casting zinc alloy, and indium ingots. YunnanTin New Materials Co., Ltd., a signi?cant shareholding enterprise, owns tin materials and tin chemical products. It has formeda production capacity scale of 80,000 tons/year for tin smelting, 125,000 tons/year for cathode copper, 100,000 tons/year forzinc smelting, 30,000 tons/year for die-casting zinc alloy, and 60 tons/year for indium smelting. Yunnan Tin New Materials Co.,Ltd., a significant shareholding subsidiary, has a production capacity of 43,000 tons/year of tin materials and 27,100 tons/year of tin chemicals. The "YT" trademark registered in the London Metal Exchange is an internationally renowned brand. Theleading product, "Yunnan Tin Brand" re?ned tin, is a "Chinese famous brand" product exempted from national export qualityinspection. The sales volume of tin products has ranked ?rst in the world for 17 years.

Company Overview

Corporate Vision

To createTo buildTo become

a world-class supplier ofkey raw materials for non-ferrous metals

a world-class professionalleading demonstrationenterprise

a world-class benchmarkenterprise in the tinsmelting industry

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2023 Environmental, Social, and Governance (ESG) Report

1883-20062007-20122013-20192020-2023

The Company was appointed by the NationalStandards Committee to undertake the work ofthe Secretariat of the Tin and Tin Alloy WorkingGroup (TC243/SC2/WG2) of the Heavy Metal Sub-Technical Committee of the National NonferrousMetals Standardization Committee, responsiblefor organizing and mainly undertaking the task offormulating and revising tin industry standards.

2009

The Company acquired 75.74% of the shares of HualianZinc Indium for a price of 3.7 billion.2015

The Company was selected as one of the top 100capital brands of listed companies in China in 2012.2012

The Company won the honor of customer satisfactionenterprise of the China Quality Association.2013

The Company won the title of advanced collective inthe national non-ferrous metal industry.

2014

The Company won the title of "Top 100 Best InvestorRelations Management in China in 2006".The Yunnan Tin brand "YT" was rated as a famoustrademark in Yunnan Province.

2007

The Company ranked among the ten most popularlisted companies in Yunnan Province.It won the title of Excellent Supplier of Baosteel, wasselected as the sample of the Shenzhen ComponentIndex for the ?rst time, was selected as the top 100of the 10th Taurus Award for Listed Companies inChina, and was included in the sample stocks of theShenzhen 100 Index.

2008

2016

The Company became the first state-owned holdinglisted company in the country to marketize "debt-to-equity".

2020The Company became the first listed companyto participate in the market-oriented "debt-to-equity swap" of locally state-owned holdingsnationwide. With good business developmentperformance and social responsibility, theCompany won the "Best Social ResponsibilityListed Company" in the China Listed CompanyReputation List.

2017The Company was ranked 190th in the list of China'stop 500 enterprises published by Fortune.

2021The Company's first performance briefing and2020 annual report performance briefing weresuccessfully selected as the "Excellent PracticeCase of the 2020 Annual Report PerformanceBrie?ng of Listed Companies" by the China ListedCompanies Association along with other 200listed companies nationwide.

2018The Company implemented the ?rst share repurchasein its history.It won the "National Market Quality Credit A-level UserSatisfaction Enterprise" certi?cate (AA user satisfactionlevel).

2022Shenzhen Information Co., Ltd., a wholly-ownedsubsidiary of the Shenzhen Stock Exchange,officially launched the National Securities ESGrating. The Company achieved an AA rating andwas successfully included in the Shenzhen ESGBenchmark Index and Shenzhen ESG LeadingIndex.2023The Company was selected into the list ofworld-class professional leading demonstrationenterprises created by the State-owned AssetsSupervision and Administration Commission ofthe State Council; won the "2023 ESG PioneerPractitioner Case" award; was selected into the"Xinhuanet CN-ESG 2023 Top 100 ESG ListedCompanies in China" list.The Company became one of the ?rst manufacturers of rawmaterials and devices in line with the EU RoHS directive.2006

The Company was included in the FTSE Russell Index,S&P Emerging Markets Index, and MSCI Global ThreeMajor Indexes. The Company's business philosophy anddevelopment prospects have been fully recognized byglobal authoritative institutions.

2019

The predecessor of the Company was established inthe ninth year of the reign of Emperor Guangxu of theQing Dynasty (1883) with the establishment of the GejiuFactory Merchants Bureau.

1883

The "YT" Fine Tin trademark was registered at the LondonMetal Exchange (LME).1992

With the approval of the People's Government ofYunnan Province, Yunnan Tin Company, Gejiu TinCapital Industrial Company, Gejiu Xidu Nonferrous MetalProcessing Plant, Gejiu Juyuan Industrial and MiningCompany, and Gejiu Yinguan Tin Arts and Crafts Factoryjointly initiated the establishment of Yunnan Tin Co., Ltd.

1998

"Yunnan Tin" A shares were listed on the Shenzhen StockExchange, with the stock code: 000960.2000

The Ausmelt furnace was completed and put intooperation, increasing production efficiency by 20 timesand setting a world record for the largest tin smeltingcapacity of an Ausmelt furnace.2002

The output of tin metal was 42,720 tons, ranking firstamong tin production enterprises.2005

The Company won the 2010 China's Best WealthCreation IR (Investor Relations Management) Award.

2010

The Company won the Golden Eagle Award of the7th Annual Conference of China's Securities Market.

2011

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2023 Environmental, Social, and Governance (ESG) Report

Highlights and Key Achievements

The Company has organized andparticipated in145 investor

exchange activities

connecting with

institutional investors.Through the interactive platform of theShenzhen Stock Exchange, the Companyhas responded to165 investor inquiries

achieving a responserate of 100%

The Company has disclosed

120 pieces of information

The Company has been elected as the Vice President unit ofthe Council of the Yunnan Association of Listed Companies

In 2022, the Company won the "Panoramic Investor Relations GoldAward - Best Small and Medium Investor Interaction Award"The Company was honored with the "Excellent Practice Case ofthe Office of the Board of Directors of Listed Companies for theYear 2023" by the China Association for Public Companies

The Company received China's Excellent Investor Relations "BestInnovation Practice Award"The Company was awarded the "Golden Wutong" Award for BestInvestor Relations Management of Listed CompanyThe Company won the 19th "New Fortune" Gold MedalSecretary of the Board of DirectorsIn 2023, the Company achieved a 4A level in the performanceevaluation of the secretary of the board of directors of listed companies.More than 11,400 cadres andemployees of the Company havereceived integrity warning education

The Company has protected a green areaof approximately

5.483 million square

meters

The Company has planted about

1.219

million new trees, shrubs, and vines

Since 2020, the Company has restored anecological area totaling616 hectares.The Company has used clean energy sources suchas water, wind, and light, totaling

1.448 billion

kilowatt-hours

accounting for80% of itsenergy use

The Company and its subsidiaries conducted 471 ecologicalenvironment protection knowledge training sessions

training 32,076 person-times

The Company operates71 platforms at or above the provincialand ministerial levels, such as state-level enterprise technologyinnovation centers

The Company has revised

139 national industrystandardsThe Company has been granted atotal of581 national patents

with54 new patentsadded per year

The Company has been selected as one of the 200 enterprises by the State-owned Assets Supervision andAdministration Commission of the State Council to create a world-class professional leading demonstration enterpriseThe Company has achieved acustomer satisfaction rate of

99.5%.

The Company has been awarded the first batch of "Strengthening Sources to Help Enterprises" industry and?nance service base by the Shanghai Futures Exchange

In 2023, the Company ranked250th on the Fortune 500 list of China's listed companies.

Among the registered employees of the Company,there are652 veterans and 4,930 ethnic minorityemployees.The Company has organized89 emergency drills

with a total of2,434 peopleparticipating and observing the drills

The Company has organized205 activitiessuch as safety oath, launching safety initiatives,and signing safety commitments

totaling CNY

2.2539 million

The Company directly investedCNY

1.7752 million in the Rural

Revitalization Assistance Fund

consumed and helpedCNY 478,700agricultural productsThe Company has activelyarranged91 new publicwelfare posts

The Company won the "2023 ESG Pioneer Practitioner Case" awardThe Company was selected as one of the "Xinhuanet CN-ESG China's Top 100 ESG Listed Companies in 2023"

CompanyGovernance

EnvironmentalProtection

EconomicContribution

SocialContribution

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2023 Environmental, Social, and Governance (ESG) Report

The Company's Journey Towards Sustainability

The Company fully acknowledges the importance of considering diverse perspectives when developing and promotingESG projects. Through continuous communication with stakeholders, the Company establishes key issues related toenvironmental, social, and corporate governance. The Company ?rmly believes that advancing sustainable developmentcannot be achieved without the trust and support of both internal and external stakeholders. The Company continuallyre?nes its communication mechanisms, actively engaging with stakeholder groups including government and regulatoryauthorities, shareholders and senior management, shareholders and investors, customers, media, suppliers, contractors,regulatory bodies, and Company employees. The Company responds to stakeholders' concerns and expectations, strivingfor a win-win scenario between corporate development and stakeholder satisfaction.

Stakeholder communication

Stakeholders

Expectations and

Demands

Communication and

Response

Regular communication and reporting,institutional research, policy implementation,information disclosure, etc.· Corporate Governance· Business Ethics· Environmental Management· Waste DischargeGovernment andRegulatory Agencies

Engagement through General Meeting ofShareholders,Board of Directors, ?nancial reports, business reports,roadshows, and other forms of communication withthe Company.Engagement through General Meetingof Shareholders, Board of Directors, ?nancial reports,business reports, roadshows, and other forms ofcommunication with the Company.

· Economic Performance· Corporate Governance· Compliance and Risk Management· Business EthicsShareholders andSenior Management

On-site communication, market research, suppliertraining, transparent procurement, customersatisfaction surveys, etc.· Innovative R&D· Supply Chain Management· Supply Chain Due Diligence Management· Product Quality· Privacy and Data SecurityCustomers andSuppliers

Employee activities, employee training, corporateintranet, employee handbook, etc.· Employee Rights and Bene?ts· Employee Development and Training· Occupational Health and SafetyEmployees

Industry conferences, strategic cooperation,exchange visits, etc.· Supply Chain Management· Supply Chain Due Diligence Management· Technological R&D Innovation· Product QualityPartners

Community volunteer activities, social welfareprojects, social support projects, etc.· Protection of Ecological Environment· Community Public Welfare· Investor Relations ManagementCommunity, public, media, etc.

Taking into account annual hot topics, national strategies, industry trends, and the actual development of theCompany's business, a materiality survey questionnaire is prepared in line with the requirements of various sustainabilitydisclosure guidelines, the Company adheres to universal standards such as the Global Sustainability Standards Board's"Sustainability Reporting Standards" (GRI Standards) and the Chinese Academy of Social Sciences' "Guidelines onCorporate Social Responsibility Reporting for Chinese Enterprises" (CASS-ESG 5.0).In 2023, the Company continued toconduct materiality surveys on sustainable development, serving as a crucial basis for compiling the sustainability report.The Company collected 285 valid questionnaires and organized the survey results. The Company further analyzed theimportance of each material issue, selecting the following key sustainability topics that are of high interest to stakeholdersand closely related to the Company's sustainable development.

Materiality Analysis

Materiality Con?rmation Process of the Company

Policy and IndustryBenchmarking

Consultation withIndustry Experts

Summarization andInduction of IssuesInterviews withInternal and External

Stakeholders

Materiality Matrix of the Company

1 Construction of Environmental Management System2 Management of Waste and Hazardous Substances3 Protection of Biological Diversity4 Water Resources Management5 Energy Management6 Responding to Climate Change7 Recognition and Response to Climate Risks and Opportunities8 Rights and Interests Protection9 Occupational Health and Safety10 Employee Development and Training11 Employment Promotion12 Employee Compensation and Bene?ts13 Employee Incentive Policies14 Digital Transformation15 Customer Service

16 Product Quality17 Technological Innovation18 Leading Industry Development19 Supply Chain Due Diligence Management20 Supply Chain Management21 Rural Revitalization22 Community Relations23 Privacy and Data Security24 Corporate Governance25 Anti-Corruption and Business Ethics26 Party Building Management27 Shareholder and Investor Rights28 Legal and Compliant Operation and Internal Control29 Construction of ESG Management System

Importance to the Company

Importance to Stakeholders

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2023 Environmental, Social, and Governance (ESG) Report

3D Mining Software TechnologyCollaborative Platform Application

Mining DCSControl System

Digital Quality Inspection

SystemFlotation IntelligentControl System

Online Safety MonitoringSystem for the Tailings PondBoom-Type Roadheader

Integrated Dispatch

Command System

Process

Digital Mines

Mining andBack?ll

Hoisting andTransportation

Crushing andMineral Processing

TailingsTreatment

Large-ScaleMechanization

Auxiliary

System

GeologicalResources

MineDigitization

Mine Digitization

Special Topic

Quality Mine Development throughDigital Intelligence

Leading High

Yunnan Tin has proposed the development strategy of "Digital Transformation and Upgrading of theEntire Industry Chain", formulated the "Implementation Plan of Digital Transformation and Upgrading",and adhered to the principle of "Comprehensive Planning, Step-by-Step Implementation". The Companycontinues to increase investment in information technology, focusing on promoting intelligent miningand intelligent smelting, striving to become a digital benchmark in the industry. With the mine as thefoundation and the concentration plant as the support, the Company further promotes key special taskssuch as network infrastructure, bottom-layer automation, mine digitization, and production operationinformatization, thus empowering high-quality mine development through informatization.

Intelligent Mine

1112

This platform utilizes four majorsystems: spatial database,system integration platform, toolsoftware, and business process.It integrates data and specializedbusiness operations, providinga uni?ed data managementplatform for professionaltechnical systems in minegeology, measurement, andmining. This solution addressesthe issue of data informationsilos, signi?cantly reducing datasharing costs and enhancingproductivity.

The boom-type roadheader hasan average tunneling speedof 1.04 m/h, with a recordspeed reaching up to 1.54 m/h.Compared to the cost of blastingtunneling, the cost per meter isreduced by 3.2%. This not onlyenhances tunneling e?ciency butalso improves the safety of miningconstruction by replacing the useof explosives, thereby eliminatingthe risk of blasting injuries andasphyxiation from poisoning.Additionally, the constructioncauses minimal disturbance tothe rock mass, maintaining betterrock mass integrity and stability,and reducing the risk of fallingpumice causing injuries.

The production system employssemi-autogenous grinding toreplace the traditional "threestages and one closed circuit"grinding process. It introducesadvanced equipment such asthe DCS control system, ?otationintelligent control system, onlinegrade instrument, particle sizeinstrument, large ?otationmachine, ?otation column, andtower mill. This setup realizes theprocess ?ow of coarse crushing,grinding, ?otation, reagent,metering, remote chain control,and video surveillance. This marksa new chapter of large-scaleproduction process equipment,technological modernization,and intelligent control in thebene?ciation workshop.

For the ?rst time in China,?otation foam analyzer controltechnology is used to monitorthe ?otation foam rate and foamsize in real time. The ?otationoperation image is capturedthrough the foam image system,and the ?otation operation isstabilized through image systemanalysis combined with DCScontrol. Since its implementation,the ?uctuation of copperconcentrate grade has beenreduced by 10%, the grade hasincreased by 0.5%, the dosageof reagents has been reduced by5%, and the annual bene?t hasexceeded CNY 3 million.

The system relies on industry-standard technical protocolsand integrates the functions ofan industrial cloud platform,industrial microservices,application and developmentdeployment based on thestandard interfaces establishedamong the systems. It appliesin a novel way the integration ofmultiple data sources in threemajor subsystems: the truckscale automatic weighing system,the mineral processing slurryautomatic measurement system,and the quality inspection datamanagement system. This breaksthe traditional mineral processingmeasurement work?ow andcreatively realizes the digitaltransformation and application ofmine quality inspection work.

Through the uni?ed dataintegration of the underlyingsupport of the private cloudplatform and the dispatchcenter, the Integrated DispatchCommand System can integratethe production process controland monitoring system of theentire mine into the same datacenter. It realizes comprehensivemanagement of remote commandvisualization, real-time on-sitemonitoring, dynamic informationdisplay, and centralizedproduction data. Through themeans of information technology,the safety of mining is ensured.

Application of 3D Mining

Software TechnologyCollaborative Platform

Boom-Type RoadheaderBene?ciation DCS Control System

Flotation Intelligent Control

System

Digital Quality Inspection

System

Integrated Dispatch Command

System

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2023 Environmental, Social, and Governance (ESG) Report

Yunnan Tin has built the first fully automatic casting production line in the tin smelting industry. This line hasachieved fully automatic precise measurement of ingots, automatic slag scraping by industrial robots, automaticdemoulding of tin ingots, precise positioning laser automatic printing of batch number trademarks, automaticarrangement and stacking by fully automatic manipulators, and automatic packaging by fully automatic packers.This completes the intelligent transformation and upgrading of the entire process of tin casting, significantlyimproving production e?ciency while e?ectively reducing safety risks such as burns and bruises.

Automatic Casting Production Line for Tin Re?ning

Through the integration of 5G, cloud computing, and advanced technology, the smart storage solution for tin ingotshas successfully achieved remote unmanned control, significantly improving production efficiency and flexibility.This has helped to increase the storage efficiency of tin ingots by more than 80%, inventory efficiency by 30%,and inventory accuracy by 15%. The solution adopts innovative combinations such as 5G + panel conveyor, AGV,RGV, dispatching bridge, and handling mechanical arm. This successfully achieves unmanned storage of high-risklinks and fewer people in key areas, setting a benchmark for the construction of intelligent factories and digitalmanagement in the non-ferrous metal industry.

5G + Tin Ingot Smart Storage Application

Digital Smelting Factory

The Company has achieved major technicalbreakthroughs such as oxygen-enriched airsmelting and low concentration SO

recovery, withmore than 20 national authorized invention patents.

The re?ning system consists of Fire Re?ningand Electrolytic Re?ning, with the mainproducts being re?ned tin and solder tin.

8㎡ Large-Scale Smelting Furnace, theCompany's pioneering technology for e?cientprocessing of tin slag and low-tin materials

For slag storage yard, after theslag volume reaches the land?llvolume, it is covered with soiland vegetation is planted.

Top-blown Submerged Lance Smelting

Crude TinRe?ning

Tin IngotProducts

Flue Gas

Tin Concentrate

Slag

SulfuricAcid SalesStandard Exhaust

Emission

Oxygen-enriched Combustion Flue

Gas Puri?cation

TailingsSalesEnvironmentalProtectionTreatment

5G + Smart Storage

Cansolv Low ConcentrationSO

to Produce Acid

Automatic CastingProduction Line forTin Re?ning

Automatic ContinuousCrystallization VacuumDistillation Line

For ?ue gas puri?cation, the concentra-tion of SO

in the ?ue gas after denitrationis less than 20mg/m

, and nitrogen oxidesare below50mg/m

, far better thannational emission limit standards.

Intelligent Opera-

tion Center forTin Smelting

取得富氧熔炼、烟气低浓度二氧化硫回收等重大技术突破,国家授权发明专利20余项

精炼系统由火法精炼与电解精炼两个系统组成,主要产品为精锡和焊锡

对烟气净化处理,脱硝后烟气SO

浓度低于20mg/m

,氮氧化物低于50mg/m

,远优于国家排放限值标准

顶吹浸没熔池熔炼

粗锡精炼

烟气

锡精矿

炉渣

硫酸销售达标尾气排放

富氧烟化挥发

尾渣销售环保处理

线5G+智慧仓储

线Cansolv低浓度

二氧化硫制酸

锡锭产品

锡冶炼全自动

浇筑生产线

自动连续结晶真空蒸馏脱杂

对烟气净化处理,脱硝后烟气SO

浓度低于20mg/m

,氮氧化物低于50mg/m

,远优于国家排放限值标准

锡冶炼智慧运营中心

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2023 Environmental, Social, and Governance (ESG) Report

The Intelligent Operation Center adopts an industrial Internet architecture, driven by data and centered aroundbusiness processes. It visualizes the entire process of production monitoring screens, production and operation data,energy information, equipment status, alarm information, and dispatching information. This enables centralizedmonitoring of workshop process sections and production business departments, integrating all essential productionresources, and achieving uni?ed command of production scheduling.

Intelligent Operation Center for Tin Smelting

Yunnan Tin has established a network security and informatization leadership group. Each subsidiary unit has set upcorresponding organizations. With ERP as the core, the Company has accelerated the application research of digitaltransformation and upgrading of the manufacturing industry (ERP Phase I and II). Following the implementationstrategy of "overall planning, step-by-step implementation, pilot first, and gradual deepening", the Company hasachieved full coverage of its core business.The ERP system comprehensively constructs the digitization of human resources core management, company?nancial accounting and consolidation, core value chain of main industries, and decision-making system. It realizesthe full coverage of the integrated management of the entire process of production, supply, marketing, and tradeof the Company's core production and trade units. With real-time business data of core production and operationmanagement, it drives to improve the Company's e?cient and scienti?c decision-making ability and benchmarkingmanagement ability.

CaseTin Industry Big Data Platform, Digital Transformation and Upgrade with ERP as the Core

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2023 Environmental, Social, and Governance (ESG) Report

Steady Operation andLaying a Solid Foundationfor Development

Corresponding SDGs:

Yunnan Tin focuses on continuously improving the governancelevel of modern enterprises. Through continuous optimization ofgovernance institutions and operation systems, it continuouslystrengthens professional governance ability and management level,builds a good governance system, continuously accelerates the paceof reform, transformation, and upgrading, actively plays the leadingrole of state-owned enterprises, and deepens the exploration ofthe great practice of the modern enterprise system with Chinesecharacteristics.

1920

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

2023Key Performance

Corporate GovernanceYunnan Tin strictly abides by the requirements of laws and regulations such as the Company Law, the Securities Law, and theCode of Corporate Governance for Listed Companies. It constantly improves the corporate governance structure and establishesthe "four mechanisms and one echelon" decision-making system comprising the General Meeting of Shareholders, Board ofDirectors, Board of Supervisors, Party Committee, and the management. It e?ectively implements internal governance systemssuch as the Articles of Association, the Rules of Procedure for the General Meeting of Shareholders, the Rules of Procedure forthe Board of Directors, and the Rules of Procedures for the Board of Supervisors, thereby standardizing the organization of thethree meetings. During the reporting period, the Company successfully completed the election of the ninth session of the Boardof Directors and the Board of Supervisors, ensuring the smooth transition of the Board of Directors and the Board of Supervisors,and ensuring the compliant operation of corporate governance.Organizational Structure of the Company

Operation of Three Mechanisms

The General Meeting of Shareholders is the highest governance body of Yunnan Tin. The Company strictly adheresto the relevant provisions and requirements of the Company Law, the Articles of Association, and the Rules ofProcedure for the General Meeting of Shareholders. It ensures that all shareholders, especially minority shareholders,can enjoy equal status and fully exercise their legitimate rights.

General Meeting of Shareholders

The Board of Directors of the Company has deliberated and made decisions on signi?cant matters of the Companyin strict accordance with the terms of reference stipulated in the Articles of Association. The notice, convening, andvoting methods of the meeting were in compliance with the requirements of the Company Law and the Articlesof Association. The minutes of the meeting were complete and standardized. All directors were able to carry outtheir work in accordance with relevant laws and regulations, attend the board of directors and General Meeting ofShareholders, perform their duties and obligations diligently and dutifully, actively participate in relevant trainingand learning, familiarize themselves with relevant laws and regulations, and improve their ability to perform theirduties.

Board of Directors

During the reporting period, the Board of Directors of the Company held a total of 9 meetings,including5 on-site meetings and 4 interim board meetings held by way of communication

voting. A total of62 resolutions were considered and passed.

Besides,9 independent board meetings were held, and 34 resolutions were considered andpassed.

Discipline Inspection Group in the CompanyAccredited by Discipline Inspection Commissionof Yunnan Tin Group (Holding) Co, LtdSupervision

Safety and Environmental ProtectionDepartment (Emergency Management Center)

Party and Mass Work DepartmentParty Committee O?ceO?ce

Human Resources DepartmentMine Management CenterOperation Management DepartmentScience and Technology Investment DepartmentSecurities Department (Strategic Management

Department)Financial Management DepartmentMarket Operation CenterAudit and Risk Control Department

General Meeting of Shareholders

Board of Directors

General Manager

Deputy General Manager

Party Committee of

the CompanyBoard of Supervisors

Secretary of the Board of Directors

Board of Auditors

PerformanceCompensation

Committee

NominatingCommittee

Strategy andInvestmentCommittee

Comprehensive Room of DisciplineInspection Group

During the reporting period, the Company held 5 General Meeting of Shareholdersand passed 27 resolutions.

2023

Key Performance

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

Procedure for Election of Directors

The board of directors of the Company has established four specialized committees: Strategy and Investment,Audit, Performance Compensation, and Nomination.Each specialized committee of the Board of Directors performsits duties in accordance with the Articles of Association and the procedural rules of each committee, free frominterference by other departments or individuals within the Company. Each specialized committee diligentlystudies relevant important matters according to their respective responsibilities. They fully utilize the functionsof the specialized committees, strengthen the performance of the Audit Committee, and play a crucial role inthe reasonable and scientific decision-making of the Board of Directors. They also enhance the performance ofindependent directors, fully utilizing the important role of independent directors to protect the legitimate rights andinterests of all stakeholders.

The Company strictly adheres to the requirements of relevant laws and regulations such as the Articles of Associationand implements the relevant procedures for the election of the Board of Supervisors.The Board of Supervisorsactively exercises its supervisory duties, is accountable to the General Meeting of Shareholders, supervises thelegality of the Company's financial affairs and the performance of duties by the Company's directors and seniormanagement, and pays attention to key matters such as hedging and related party transactions, effectivelysafeguarding the legitimate rights and interests of the Company and its shareholders.

Committees under the Board of Directors

Board of Supervisors

The e?ectiveness, independence, diversity, and professionalism of the Board of Directors' operation are the goalsthat the Company strives to achieve.The Company works to promote diversity on the Board of Directors in terms ofprofessional skills, industry experience, professional background, gender, and culture, to foster diverse development.During the reporting period, in accordance with the relevant provisions of the newly revised "Measures for theManagement of Independent Directors", the Company conducted a comparative review of the current tenure of itsindependent directors. It initiated the revision of relevant systems such as the Articles of Association, the WorkingSystem of Independent Directors, the Working Rules of Special Committees of the Board of Directors, and theAuthorization Management Measures of the Board of Directors. These systems have been implemented following thedecision-making procedures of the Board of Directors and the General Meeting of Shareholders, further enhancingthe Company's governance capability and the level of standardized operation.The Company has appointed three independent directors and one employee director, accounting for approximately44% of the board seats. To enhance the role of independent directors and improve the governance level of listedcompanies, the Company has established and improved the independent director pool. It has hired personnel withindustry, ?nancial, and legal backgrounds to serve as independent directors of the ninth Board of Directors of theCompany. Leveraging their professional expertise, independent directors provide opinions on major issues suchas company strategy, standardized operation, operation and management, and risk internal control at the GeneralMeeting of Shareholders, Board of Directors, and special committees. This forms internal checks and balances withinthe Board of Directors, further improving the corporate governance structure and standardized operation of theCompany, and enhancing the scienti?c and professional decision-making of the Board of Directors.

Structure of the Board of Directors

CandidateProposal

The Board of Directors, the Board of Supervisors, and the shareholders whoindividually or jointly hold more than 3% of the Company's shares shall putforward proposals for director candidates to the Company.Review and Self-Examination

The Nomination Committee of the Board of Directors reviews and gives opinionson the qualifications of the relevant director candidates, and the directorcandidates conduct self-inspection on their quali?cations.Deliberationby the General

Meeting ofShareholders

The director candidates attend the meeting in person, and explain their performanceability, professional ability, working experience, violations of laws and regulations, andwhether there is any con?ict of interest with the listed company.Review by Stock

Exchange

The quali?cations of independent directors are submitted to the Shenzhen StockExchange for reviewVoting at General

Meetings

The elected directors are determined in the order of the number of votes obtained.

During the reporting period, the Audit Committee held 8 meetings and passed a total of28 resolutions; the Strategy and Investment Committee held 5 meetings and passed 8

resolutions; the Performance Compensation Committee held3 meetings and passed 3

resolutions; the Nomination Committee held4 meetings and passed a total of 8 resolutions.

2023

Key Performance

During the reporting period, the Supervisory Committee of the Company held a total of 9meetings, including 5 on-site meetings and 4 interim meetings held by way of communicationvoting. A total of33 resolutions were considered and passed.

2023

Key Performance

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

To deepen the important content of the four special actions of "Creating Demonstrations, Enhancing Management, CreatingValue, and Leading Brands", the State-owned Assets Supervision and Administration Commission (SASAC) of the State Councilhas launched a uni?ed deployment to create world-class professional leading demonstration enterprises. By deepening thecreation of demonstrations and setting benchmarks, it has accelerated the construction of a number of world-class professionalleading enterprises with outstanding specialties, innovation-driven, lean management, and distinctive characteristics.In March 2023, the Company was selected into the "List of Establishing World-class Demonstration Enterprises and ProfessionalLeading Demonstration Enterprises" in response to the national call, and formulated the implementation plan for establishingworld-class professional leading demonstration enterprises.In addition, the Company has carried out relevant training on theestablishment of world-class professional leading demonstration enterprises, and cooperated with well-known universitiesto jointly carry out research on world-class enterprise innovation projects. The Company focuses on promoting enterprisesto improve core competitiveness and enhance core functions from all aspects, and is making unremitting e?orts to achievesustainable development and maximize brand value.

The Company continues to carry out investor relations activities through various ways and dimensions, and displays theCompany's development strategy, business performance, business highlights, and other market concerns through a variety ofmeans. In terms of communication frequency and e?ciency, the Company has continuously improved the timeliness of interactionin its work. In principle, investors will be replied within 24 hours after asking questions on the interactive platform. For matters suchas the number of shareholders concerned by individual investors, in principle, the Company will reply before the opening of themarket on the day of data acquisition, so as to meet the demands of small and medium investors in a timely manner.In addition, guided by the needs of investors, the Company actively discloses and communicates relevant information thatis conducive to enhancing investors' understanding of the Company and continuously improving the quality of informationdisclosure.The Company attaches great importance to investor briefings, fully communicates with investors, and adoptsreasonable suggestions to meet the reasonable demands of investors to the greatest extent, contributing value to creating a fairand just investment environment.Lean Management

Investor Management

Selected to create a world-class leading demonstration enterprise and training

Investor Relations Management

The Company pays attention to protecting the interests of investors. Through compliance information disclosure,active communication, and interaction with investors through multiple channels and platforms, the Companyestablishes good investor relations and shares the fruits of enterprise development with investors.

Investor Communication Channels and Key Performance Data

The Company has received137 calls from investors

The Company has held52 one-on-one conferencecalls.

The Company responded to165 investor inquiries on theShenzhen Stock Exchange's"EasyInteraction" platform.The Company has engagedwith622 institutionaland individual investors.

The Company has hosted

on-site investor research orvisit activities.

The Company has participatedin19 on-site strategy meetings

with securities dealers.The Company has participatedin5 online strategy meetingswith securities dealers.

The Company has held 7 regularreport exchange meetings.

Number of BoardMembers

12345678GenderFemaleMaleCategoryIndependent DirectorNon-Independent DirectorAge Group

Over 50 and under 60 years

old

Under 50 years old

Skills, Knowledge,and Experience

· Non-ferrous metal mining, smelting, down-stream processing, supply chain,

and enterprise management· Relevant experience as a board secretary and enterprise management· Non-ferrous metals smelting and enterprise management· Accounting, ?nancial education, and ?nancial management· Legal education and legal services· Marketing and enterprise management· Finance and strategic development· Non-ferrous metals industry analysis and ?nance

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

CaseRegular Analysis and Feedback on Investor Concerns, Facilitating Investor Communication ChannelsGiven that investors pay signi?cant attention to the application of tin industry demand, but due to the characteristicsof downstream industries being decentralized and not easy to track, the Company has formulated monthly investorrelations reports and submitted them to the Board of Directors and management in a timely manner.By sortingout the monthly capital market performance, major events, important shareholder changes, and other data, andsummarizing and analyzing the hot issues that investors are concerned about on the "Easy Interaction" platformand other channels, the Board of Directors and management of the Company can understand market changes andinvestor demands. In the process of communicating with investors, the Company collects and analyzes valuablesuggestions, fully listens to opinions, and actively improves relevant work to meet investor demands on the premiseof compliance.

Investor Relations Monthly ReportShareholder Stockholding Analysis

Report

CaseLive Video Performance Presentation Concerning Investor InterestsIn 2023, the Company held the 2022 annual performance presentation and investor exchange meeting in the formof live video broadcasting. This fully showcased the Company's operating results. The Company's directors andsupervisors conducted in-depth interactive communication with investors through on-site links. They answered therelevant questions raised by investors one by one on the Company's strategic development, resource expansion,hedging, tin industry supply and demand research, deep processing resource restructuring, and other aspects. Inthis year's performance presentation, the innovative "Entering the Listed Company on Cloud" segment was added.The Company's executives led investors into the Company's Tin Branch and Hualian Zinc Indium companies, vividlydisplaying the competitive advantages and corporate image of the Company's tin industry chain mining and smeltinglinks. This allowed investors to get closer, understand better, see clearly, and have con?dence.

2022 Annual Report Performance Presentation and Investor Exchange Meeting

CaseExecutives Participate in Roadshow Face-to-Face to Convey the Company's Investment ValueIn September 2023, Liu Luke, Party Secretary, Chairman, and General Manager of the Company, led relevant seniorexecutives to Shanghai to conduct offline investor exchange activities. They fully discussed the Company's corecompetitiveness, production and operation, and intrinsic value, and carefully listened to and collected investordemands. Through this innovative face-to-face roadshow between company executives and investment institutions,the Company has further narrowed the distance with investors, effectively enhanced mutual recognition, andconveyed the Company's development potential and investment value to the capital market.

Shanghai O?ine Investor Exchange Meeting

The Company has always been prioritizing shareholder interests and returns. While focusing on the Company's high-quality development, it adheres to diversified methods of interest distribution such as cash dividends and sharerepurchases to reward shareholders, ful?lling dividend obligations to the greatest extent.Since 2017, the Company has cumulatively distributed cash dividends of CNY 615 million (including the payment ofCNY 237 million to repurchase 22.9744 million shares). In 2022, to actively reward the Company's shareholders andshare the operating results of the Company's development with them, the Company distributed a cash dividendplan of CNY 1.20 (tax inclusive) per 10 shares to all shareholders, totaling CNY 197.4962 million. This was done on thepremise of complying with the Company's pro?t distribution policy and ensuring the normal operation and long-term development of the Company. The entire process of rights and interests distribution was completed within 15days after the approval of the General Meeting of Shareholders, realizing the cash dividend in a timely manner.

Focus on Shareholder Returns

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

The Company places great importance on the construction of the investor relations management team. Theinvestor relations team is a lean and e?cient team composed of ?nancial, economic, and legal professionals. Teammembers possess numerous professional skills certi?cations such as CPA quali?cation certi?cate, legal professionalqualification certificate, intermediate economist qualification certificate, and fund qualification certificate. Theyhave strong professional capabilities and rich work experience, providing robust support for further improving thequality of investor relations.Since 2023, the Company has actively participated in multiple training related to investor relations managementwork organized by industry regulatory departments, self-regulatory organizations of listed companies, and internalorganizations of the Company. This includes but is not limited to the preparation of regular reports, listed companyperformance presentations, etc., further enhancing the experience and ability of the investor relations team tocarry out related work. Simultaneously, the Company strengthens the training of directors, supervisors, seniormanagement personnel, and related sta? on securities market regulations and professional knowledge of investorrelations management, laying the foundation for doing a good job in investor relations management work.

In 2023, the Company conducted an internal management system status survey and focused on the top-leveldesign of the management system. It established "three pillars" of management system: internal control, riskmanagement, and compliance. The Company formed a series of outcomes such as the "Company Control Rights andResponsibilities List", "Internal Control Compliance Management Manual", "Department Compliance ResponsibilitiesList", etc. It established the "Compliance Management Method", continuously improving the construction of thecompliance management system. This e?ectively ensured the achievements of deepening reform and high-qualitydevelopment, further improved the Company's operational management level and risk prevention ability, andprovided a strong guarantee for promoting the realization of the Company's strategic development goals.

The Company has established a risk management and control system for the Board of Directors and its specialcommittees, the Board of Supervisors, the management layer, and its a?liated branches (subsidiaries). It has alsoestablished "three lines of defense" for compliance management. The departments responsible for the lines ofdefense at all levels perform their respective duties and jointly build the "three lines of defense".

Through the signing of a compliance commitment letter by all employees, the Company publicizes the compliancemanagement concepts and compliance development needs of adhering to laws and regulations, fair competition,honesty and trustworthiness, integrity, and is committed to promoting the compliance culture of enterprise rule oflaw. This enhances the core competitiveness of the Company and creates signi?cant value for the Company.To continuously strengthen the execution of internal control, the Company takes the "three pillars" constructionas its focus. During the period of system construction, the Company organized and carried out business riskinvestigation, formulated targeted recti?cation measures for the problems found in the inspection. In daily work, itimplemented the risk control compliance department's pre-compliance review and risk warning for various majordecision-making matters of the Company, achieving full coverage of internal control evaluation. The Companycontinuously strengthens supervision in key areas and important links, carries out various special audits with risk asthe guide, and helps improve the Company's risk and compliance control capabilities.In addition, the Company continuously carries out training on internal control, risk, compliance, and other aspectsof the standardized operation of listed companies, enhancing the Company's compliance governance awareness.In December 2023, it carried out "three pillars" achievement publicity training, helping all staff to deepen theirunderstanding of internal control, risk, and compliance.

Investor Relations Capacity Building

System Construction

Organizational Structure

Implementation of Measures

Compliance and Risk Management

During the reporting period, the Company continually improved its risk management system and mechanisms.By considering factors such as the Company's size, industry characteristics, risk preferences, and risk tolerance,the Company systematically identified its primary operational and management risks. It standardized businessprocesses, strengthened risk control, improved job standards, and established a comprehensive risk managementsystem that covers organizational structure, system processes, and method tools.

●?

Business and functionaldepartments

●?

Responsible fordaily operation andmanagement

●?

Compliance ManagementDepartment

●?

Planing and implementingrisk managementconstruction

●?

Discipline inspectiondepartments at alllevels and compliancemanagement supervisiondepartments such asinternal audit, supervision,and accountability

Second Line of DefenseFirst Line of

Defense

Third Line of

Defense

Operation andManagement

Risk ManagementAudit and Oversight

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

Party Building LeadershipThe Company has always placed the Party's political construction in the ?rst place. Under the correct leadership ofthe Party Committee of Yunnan Tin Group (Holding) Co, Ltd., the Company has thoroughly studied and implementedthe spirit of the 20th National Congress of the Party and the spirit of the Central Economic Work Conference, adheredto the general tone of steady progress, and firmly grasped the study and implementation of General Secretary XiJinping's important speeches and important instructions.

The Company has established a decision-making system known as the "Four Mechanisms and One Echelon". This is inaccordance with the relevant requirements of the Company Law, the Constitution of the Communist Party of China, andthe Notice from the Organizational Department of the Central Committee of the Communist Party of China and the State-owned Assets Supervision and Administration Commission on the Solid Promotion of Party Building Work into the Articlesof Association. The Company has incorporated the related chapter titled "Party Committee and Discipline InspectionGroup" in its Articles of Association, thereby enhancing the decision-making system which includes the General Meetingof Shareholders, Board of Directors, Board of Supervisors, Party Committee, and the management.

Decision-making System of "Four Mechanisms and One Echelon"

Emphasizing the Importance of Learning to Strengthen Political Loyalty

Decision-making System of "Four Mechanisms and One Echelon"

●?

The Company has organized 43 sessions studying 55 topics under this system, always addressing theoverall situation, problems, and work from a political perspective.The Company has implemented the ?rst topic system as a regular practice

●?

It has organized ?ve special study sessions for Party Committees and theoretical center groups of PartyCommittees. Party organizations at all levels have conducted "Three Sessions and One Lesson" andthematic party day learning over 4,110 times. Leading cadres have delivered 192 special party lessons,trained over 2,440 Party members, and given 177 lectures.

The Company has deeply studied and implemented the spirit of the 20th CPC National Congress.

●?

The Company has conducted six thematic education seminars, two thematic reading classes, and oneexchange of research results for the theoretical learning center group of the Party Committee. Members ofthe leading group have delivered 10 lectures and 8 thematic lectures at the grassroots level.

●?

During the period of thematic education, 80 problems were identi?ed and all have been resolved, formingone positive and one negative typical case.

●?

The Company has formulated practical plans for people's livelihood and completed all 13 items on the listof private a?airs. All 8 problems identi?ed have been recti?ed.

Promoting Thematic Education in a Solid Way

Mutual Independence, Clear Powers and Responsibilities,Coordination and Check and Balance, and E?ective Governance

Party Organization

Direct, Manage the OverallSituation, and EnsureImplementation

Two-Way EntryCross-AppointmentPreliminary Study

General Meeting of Shareholders

Set Strategies, Make Decisions, and

Guard Against Risks

Board of Directors

Strategize Operations, EnsureImplementation and Strengthen Management

Managers

Cross-AppointmentTwo-Way Entry

Board of Supervisors

Supervision

Clarify the Boundary of Powerand Responsibility

Comprehensively PromoteCorporate Governance

Give Full Play to the Role ofParty Committee

Clarify the Legal Status of PartyOrganizations

Party Committee andAccredited Discipline

Inspection Group

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

Integrating into Production and Operation to Enhance Quality and E?ciency

●?

Secretary-leading project on"Building the HeadquartersSta? Development Channel andBroadband Salary System"

●?

Key projects to "Promote theQuality and E?ciency of MineManagement Services"

●?

Innovation project on "SmeltingComprehensive EnergyConsumption TechnologyApplication and Promotion"

●?

Fully committed to establishthe Company as a world-class, professional, leadingdemonstration enterprise

●?

Promoting the construction of a"Management + Specialty" dual-channel career developmentsystem and a broadband salarysystem at its headquarters

●?

Completing the reform of thesimulation division system of theMarket Operation Center

●?

Taking the reform in the mining?eld as a breakthrough point,the Company completed thecancellation of 114 sections infour mining units within 2023,systematically integratingspecialized forces

●?

The Company strengthens themanagement of capital plans,accurately controlling its capitalgap and demand.

●?

The Company has established alegal risk management modulein the information platform of thewhole life cycle of the contract.

●?

The Company has been enrichingits ?nancing channels andoptimizing the proportion of long-term and short-term loans.……

Implementing the ProjectWork Method

Fully committed to deepening

reforms

Enhancing Its Ability toResist Risks

Fully consolidating its foundation and highlighting its role

Further tightening theorganizational system

The Company has established eight Party branches directly under the PartyCommittee of the Company to further standardize the establishment of Partyorganizations in headquarters departments (centers).The Company has improved the establishment of Party branch committeesdirectly under the Party branch and has formally elected 36 members, eightsecretaries, and eight deputy secretaries.Continuing to deepenthe brand creation ofParty building

The Company closely revolves around the value creation center positioningas the strategic unit of non-ferrous metal raw materials, promoting the newlyestablished directly affiliated branches to carry out party building brandbuilding activities.

Highlightingdemonstration andleading the overall

promotion

The Company gives full play to the "two roles" of grassroots Partyorganizations and Party members, and widely establishes demonstrationzones and demonstration sites for Party building.

●?

The Company has developedresponsibility assignmentsfor grassroots party building,comprehensive partygovernance, and party conductand integrity. This ensuresthat tasks are speci?c andresponsibilities are clear.

Strengthening integrity and discipline, and strictly governing the Party

Strict Implementation ofResponsibility Assignments

RegularWarning Education

Addressing Feedback Issues

and Recti?cation

●?

The Company organizes partymembers and cadres to studyand watch warning education?lms and noti?cations ofserious legal violations.

In conjunction with thematiceducation, the Company hasorganized 39 leading cadres toconduct on-site teaching in theincorruptible culture corridor ofthe Yuntianhua Group.

●?

In response to the threefeedback issues from the2022 annual Party Secretary'sleading grassroots partybuilding work review, theCompany has implementedten measures in three areas.

●?

In October 2023, the 14thround of the holdingcompany's Party Committeeprovided feedback on thespecial inspection of casepromotion and safety andenvironmental protection inthe sales ?eld. The Companypromptly formulated arecti?cation plan and taskbreakdown list for recti?cation.

Steady Operation and Laying a Solid Foundation for Development

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2023 Environmental, Social, and Governance (ESG) Report

In July 2023, Wu Jun, then Secretary and Vice Chairman of the Party Committee of Yunnan Tin, gave a specialparty class on the special rectification of "unmotivated" cadres. The theme was "practicing the Two Revolutions,enhancing cadre competence in ful?lling duties, striving to be responsible cadres who dare to take positive action".He emphasized the importance of deeply understanding the special rectification of "unmotivated" cadres andeducating and guiding all department party members and cadres to continuously improve their ability to performtheir duties and strive to be good cadres who dare to take positive action.

In July 2023, the 134th meeting of the Party Committee of Yunnan Tin was held as a special session to study the workof strictly governing the Party in all aspects. The meeting analyzed the situation of strictly governing the Party in the?rst half of 2023 and made arrangements for the work of strictly governing the Party in the second half of 2023.Inaddition, the meeting emphasized the need for a deep understanding of the spirit of General Secretary Xi Jinping'simportant speech at the Second Plenary Session of the 20th Central Commission for Discipline Inspection. It calledfor a clear understanding of the current situation of strict Party governance, a long-term commitment to maintainingstrict standards, and unwavering efforts to improve the system of strictly governing the Party in all aspects. Thisapproach is implemented in all areas, aspects, and links of Party building, with a persistent push for strictly governingthe Party in all aspects. This provides a strong guarantee for the Company to become a world-class professionaldemonstration enterprise.

The Party Committee of Yunnan Tin conducting a special study on strictly governing the Party in all aspectsWu Jun teaching a special party class on the special recti?cation of "unmotivated" cadres.

Special Study of the Party Committee of Yunnan Tin on Strictly Governing the PartyCaseParty Class for "Unmotivated" Cadre Special Recti?cationCase

Steady Operation and Laying a Solid Foundation for Development

3738

2023 Environmental, Social, and Governance (ESG) Report

The Company places great importance on the integrity education of its employees and managers at all levels. Tostrictly prevent and control fraud and strengthen the Company's internal governance, the Company has continuouslyrevised and improved the "Anti-Fraud Management System of Yunnan Tin Company Limited". This system clearlydesignates the comprehensive o?ce of the discipline inspection group as a permanent anti-fraud institution andurges employees and managers at all levels to strictly abide by the relevant rules and regulations of the superiordiscipline inspection commission. The Company also adheres to the "Provisions on Filing Records of Interferencein Enterprises' Normal Operations and Management Activities (Trial)", ensuring that the Company's production,operation, and management activities are standardized, honest, and e?cient.Anti-Fraud Management System of the Company

CaseRegular Warning Education, Case-Driven Reform, and Case-Based Conduct Correction

CaseEach Party Branch Carries out Party Day Activities with the Theme of Warning Education

The Company has organized Party members and cadres to learn from and watch warning educational ?lms such as"Zero Tolerance", "Pain of Tin Mountain", and "Abyss". This education has encouraged Party members and cadresto fasten the "safety belt" of honest practice, and firmly resolve not to become a negative example in warningeducation. In conjunction with thematic education, the Company has organized leading cadres to visit the corridor ofhonest culture of state-owned enterprises in Yunnan Province for on-site teaching and integrity warning education.The four subordinate mining units carried out the warning education of protecting factories and mines from top tobottom, and more than 1,800 cadres and workers have been baptized by the education, taking the case as a warning,promoting reform, and rectifying conduct with the case.

To solidly promote the construction of Party conduct and anti-corruption work in depth, the Party Committee ofthe Company attaches great importance to and organizes all Party branches to continuously carry out special Partylessons on Party conduct and clean governance. Through negative typical cases, it carries out warning education forParty members, cadres, and workers, further promotes the "Incorruptible Yunnan" action, strengthens the sense ofhonesty and self-discipline of Party members and cadres, and creates a good atmosphere of integrity.

Leading o?cials visited the corridor of incorruptible culture of state-owned enterprises in Yunnan Province for on-site teaching.

Party members and cadres of the Company visited andstudied at the Honghe Anti-corruption Education Base.

Party Members and Mass Department, Audit Department,Human Resources Department and SecuritiesDepartment Party Branches of the Company jointlylaunched Party Day activities on the theme of National

Security Education and Learning.

To supervise possible corruption within the Company, the Companyhas set up a special reporting mailbox and telephone. It encouragesall employees and stakeholders to frankly report to the Companyany behavior that may violate business ethics and anti-corruptionprinciples, including any form of bribery or corruption suspicion.Through continuous tracking and monitoring of the problems foundin the report and internal inspection, and taking correspondingmeasures, the Company aims to further improve corporategovernance.

Whistleblower Hotline:

0871-64983008

●?

Whistleblower Protection System: The Company prohibits any illegal discrimination or retaliation.Those who disclose the whistleblower's information or retaliate against the whistleblower willbe punished with a warning or dismissal, depending on the severity of the case. In addition, theinvestigation and handling results will be reported to the whistleblower.

Reporting and Handling Procedures of Fraud Cases

●?

Accountability: Leaders shall bear responsibility for the occurrence of fraud due to negligencewithin the scope of their supervisory or in-charge work. The Company's management personnelshall bear the corresponding responsibility for direct operation or participation in decision-making within the scope of their duties.

●?

Remedial Measures: The internal control of the affected business units shall be evaluated andimproved. The Company's business dealings with customers, suppliers, and other relevant unitsshall be based on integrity and fairness, and the relevant information and requirements of theCompany's anti-fraud work shall be communicated to them.

●?

Punishment: Corresponding punishment shall be given in accordance with the regulationsof Party discipline. Those who violate the law shall be handed over to the judicial organs forhandling according to law.

Accountability, Remedies and Penalties

Cultivate Integrity and Self-Discipline for an Atmosphere of Honesty and Uprightness

Guarding the Earthand Drawing a Picture ofGreen Prosperity

Responsive SDGs

The Company has always adhered to respecting, complying with,and protecting nature. It firmly upholds the concept that "lucidwaters and lush mountains are invaluable assets". With the missionof achieving excellent operations to promote the green and low-carbon development of the industry, the Company actively carriesout ecological environment protection work. It strives to implementmeasures to protect and improve the ecological environment,enthusiastically participates in the national "carbon peaking andcarbon neutrality" strategy, establishes a comprehensive carbonreduction management mechanism, and contributes to the greendevelopment of the economy and society.

3940

Guarding the Earth and Drawing a Picture of Green Prosperity

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2023 Environmental, Social, and Governance (ESG) Report

BiodiversitySince the 1990s, the issue of biodiversity has gradually become a focus of attention in the international community.To protect the ecological environment upon which humans depend, the Chinese government actively advocates"building a community with a shared future for mankind" and promotes biodiversity conservation.The Company is always committed to protecting the green ecology. To protect the biodiversity of the Company'slocation, it has adopted a series of policies and actions, forming a "risk investigation - ecological management -restoration compensation" management method. Through rational planning of mineral development activities andthe implementation of ecological restoration measures, the Company minimizes the adverse impact on local andsurrounding regional ecosystems, and promotes the progress of biological diversity.

Mining activities can cause a certain degree of surface damage and biodiversity loss. To minimize the impact, theCompany focuses on organizing risk investigations within the scope of the Company's project before pre-projectplanning and surface disturbance activities. It fully carries out geological exploration, assesses and identi?es highbiodiversity areas and species impact risks, strives to control the impact scope to mitigate the impact on biodiversity,continuously improves the ecological quality, and realizes the coordinated development of ecological restorationand sustainable production.

Early Stage Hazard Investigation

In 2023, the Company's leaders formed a professional team of more than 100 special working groups to ensure thestable operation of key projects. The team focused on the preparation of development and utilization plans, two-in-one reports, and environmental impact assessment reports for mining projects around the Company's miningrights. They conducted a detailed assessment of the project's ecological environment status and potential ecologicalenvironment impacts. This included, but was not limited to, assessing the impact on land use, surface water,groundwater, soil erosion, geological disasters, ambient air, environmental noise, solid waste, regional ecologicalsensitivity, agricultural and forestry ecology, etc., to ensure the integrity and stability of ?ora, fauna, microorganisms,and the ecological environment within the project area. By identifying the current status of the ecologicalenvironment and biodiversity, assessing the potential impact on the integrity of the ecological system's biodiversity,identifying potential environmental risk sources in advance, and formulating mitigation measures and emergencyplans, the Company ensures the rationality of project construction and site selection.

CaseKey Project Design, Development, and Utilization Scheme

Medium-Term Ecological Management

Chrysanthemums are planted in the tailings dam of the

bene?ciation workshop of Datun Tin Mine

Based on the local environment and climate conditions of the mine, the Company has selected suitable plant speciesfor planting, such as Gerbera jamesonii, chrysanthemum, and other plant species. This increases soil fertility andvitality. Vines are planted on the slopes to achieve vertical greening, thereby protecting and restoring local vegetationcoverage. This provides suitable habitats and food sources, supporting the survival and reproduction of local wildlife.In addition, for 1920 geological disaster sites and the Hualian Zinc-Indium Manjiazhai open-pit mine, a cascadeslope control project is implemented according to the characteristics of the slope rock mass. This includes tablereinforcement, sloping, filling and leveling, greening, and reforestation to form a cascade slope and preventslope instability. For the reclaimed waste rock yards #16, #17, and #18, the Company has achieved e?ective plantmanagement and irrigation for the planted vegetation every day and every shift.

CaseWisely Choosing the Right Location and Planting a Green Future

The slope is adapted to local conditions, and the vine

rhyme brings a touch of green

The Company adheres to the Kunming-Montreal Global Biodiversity Framework, focusing on the 23 speci?c targetsset to be achieved within and beyond 2030. This is done in order to protect biodiversity for sustainable use. TheCompany is committed to complying with the International Finance Corporation (IFC) guidelines for biodiversityconservation and sustainable use of biological natural resources, as well as the United NationsConvention on

Biological Diversity. The focus is on the protection and sustainable use of biodiversity.The Company enhances environmental protection education and awareness training for its internal staff. Thisdeepens the understanding and concern for ecological protection at the awareness level. Through training andeducational activities, the sta?'s consciousness of biodiversity protection during projects is strengthened. This formsa company-wide participation in ecological protection at the action level, mobilizing all sta? to jointly protect thegreen ecology and promote the progress of environmental protection.

To excel in ecological protection, the Company strictly formulates and implements the plan for minegeological restoration and land reclamation. It promptly restores land and flora and fauna, focusingon the sustainable development of the mine ecosystem. The Company explores the benign greenmine development model of "development, protection, and greening" through mine reclamation,a?orestation, and ecological restoration. It continuously improves the vegetation coverage and greeningrate of the mine area, enhances the carbon sequestration capacity of the mine ecosystem, and practicesthe ecological environment protection concept of "lucid waters and lush mountains are invaluableassets".

Post-Reclamation Compensation

Guarding the Earth and Drawing a Picture of Green Prosperity

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2023 Environmental, Social, and Governance (ESG) Report

In 2024, in conjunction with the Mine Geological Environment Protection and LandReclamation Plan of each mining unit and the actual production and operation, it isplanned to complete the ecological reclamation task of

90.1 hectares of mines.

After the reclamation of the Yili sub-project of the Laochang Branch, the Company has achieved the greening ofwasteland, increased corn production, and increased farmers' income by guiding local farmers to plant green. Inaddition, the Company has carried out biodiversity monitoring of wild animals and vegetation around the LaochangBranch, such as Yangyoushan, ventilation shaft, and the second work area of the Kafang new mine. Through the jointe?orts of the Company and local farmers and villagers, it is now lush green, with birds singing and ?owers fragrant,and pheasants multiplying. The Company's ecological management has brought signi?cant changes to the mine.

CaseReclamation of Mining Area for Rejuvenation

The relevant departments of The Company headquarters and Kafang Branch carrying out tree planting activities in

Tianwan Area

WorkObjective

Herons are welcomed in the mining area in

winter

Water birds swim freely in the tailings pond

Through reclamation, the wild mushroom

has gone from zero to abundant

Tailings pond in full

bloom of ?owers

During the reporting period, the Company'smining units planted approximately

1.219

million new trees, shrubs, and vinesSowed about4,500 kg of grassseeds, small chrysanthemum seeds, etc.

Protected a green area of about 5.483

million square meters

Since 2020, the Company has restored anecological area totaling616 hectares.

During the reporting period, Datun Tin Mine, a subsidiary of the Company, newly planted about13,419 trees, shrubs, and vines; sowed grass seeds and small chrysanthemum seeds ofabout30kg; and protected a green area of about 521,868 square meters. More than100 seedlings were replanted, and the survival rate of vegetation was over 95%.

2023

Key Performance

2023

Key Performance

Guarding the Earth and Drawing a Picture of Green Prosperity

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2023 Environmental, Social, and Governance (ESG) Report

Tailings Pond Management

At all stages of the life cycle of the tailings facility, the Company actively assumes responsibility to ensure that thesafety management of the tailings pond is a priority. The Company has formulated and improved the managementsystem of the tailings pond, continuously conducted environmental monitoring of the tailings pond, and establisheda dedicated department responsible for strengthening the supervision and management during the operation of thetailings pond to ensure that the discharge of tailings meets the discharge standards. The tailings pond managementmeasures implemented by the Company include, but are not limited to, filling of tailings, establishment ofemergency pools, implementation of supervision and monitoring plans, and secondary utilization of tailings pondresources. These measures ensure the e?cient, safe, and sustainable development of tailings pond management.

In the process of operating and managing the tailings pond, the Company practices a dual prevention mechanism to e?ectivelyprevent and control the risk of the tailings pond. The Company strictly implements the requirements of the Guidelines for theInvestigation and Treatment of Potential Pollution Hazards in Tailings Pond (Trial), conducts a comprehensive investigation andtreatment work at least once a year before the ?ood season, formulates a treatment plan according to the list of problems andin combination with the daily investigation and treatment situation, and implements the "one policy for one pond" treatment.Simultaneously, the Company continuously improves the environmental management account system of the tailings pondand the management process of ?lling in the account, implements the environmental management account of "one ?le for onepond", and establishes the "double-prevention mechanism" of the tailings pond. This involves carrying out risk classificationmanagement and control of the tailings pond and the investigation and management of hidden dangers, timely discovering andeliminating all kinds of potential safety hazards, ensuring the traces of work, and ensuring the safe operation of the tailings pond.

Risk Management of Tailings Pond

Online safety monitoring system for the tailings pond

Two management measures for emergency management

To strengthen the accident emergency plan and response capabilities, the Company has developed and re?ned acomprehensive emergency plan for the tailings pond. The Company has also enhanced the construction of the onlinemonitoring and early warning system for the tailings pond to timely detect and respond to potential safety hazards.

Emergency Management of Tailings Pond

· Related departments organize annual emergency drills for tailings pond and continuously improves

the plan based on the results of the drills.

· Tailings dam patrol personnel are familiar with the emergency plan for sudden environmental incidents,perform equipment patrol and maintenance work, and actively participate in plan drills.· In the event of an accident, it is promptly reported to the workshop, the mining department, andthe environmental protection department, and downstream residents are noti?ed.· The Company regularly conducts annual geological disaster prevention and control publicitytraining and emergency drills to strengthen monitoring, early warning, and emergency responsecapabilities.· Training on disaster prevention knowledge and skills for mass monitoring and mass preventionpersonnel is strengthened.

Emergency DrillRegular Training

· Workshops have established an inspection system to monitor the tailings pond day and night,

ensuring there are no environmental pollution incidents in the tailings pond.

· Regular inspections are conducted on the tailings transportation pipeline to prevent anyoccurrences of leakage, seepage, dripping, or spillage.· The inspection and management of the return water pool are strengthened to ensure its e?ectiveoperation and prevent over?ow.· Personnel at all levels strictly carry out daily and monthly inspections in accordance with the dualprevention mechanism of environmental risks. Recti?cation measures, responsible persons, andrecti?cation deadlines are implemented for the problems found.

Tailings Dam PatrolSpecial Personnel Assignedto Speci?c Posts

Closed-loop management of the "dual prevention mechanism" of the tailings pond

The Company has formulated an"Environmental Hazard InspectionChecklist" and an "EnvironmentalHazard Inspection Record Form".

Based on a checklist, potential hazards areidenti?ed and promptly recti?ed.

Identification and HierarchicalControl of Pollution Sources.

Guarding the Earth and Drawing a Picture of Green Prosperity

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2023 Environmental, Social, and Governance (ESG) Report

Through the development of emergency drill plans for sudden environmental incidents, the branches andsubsidiaries of the Company regularly organizes and conducts emergency drills for such incidents, and carries outemergency response plan training, e?ectively preventing and controlling the occurrence of sudden environmentalincidents.In 2023, the Gejiu Municipal People's Government, Yunnan Tin, and the Kafang Branch organized the "2023Government-Enterprise Joint Drill for Flood Overtopping Accidents in the Kafang Tailings Pond". The Copper Branch,along with the Mengzi Economic Development Zone, Wenshan Zinc Indium, and the Maguan County People'sGovernment, organized government-enterprise joint drills. Each unit organized a total of 46 emergency responseplan training sessions for sudden environmental incidents such as waste gas leakage, tailings pond overtopping ordam failure, and hazardous waste leakage and spillage, with a total of 1,103 participants. A total of 70 drills wereorganized, with 1,687 participants.

Case

Diversi?ed Emergency Reacting System Construction Across Units to Strengthen TailingsDisaster Emergency Response Capability

Emergency drill of tailings pond

To strengthen the comprehensive utilization of tailings resources and reduce the production of tailings, the Companyimproves the actual recovery rate of ore through scienti?c and technological means, and uses innovative technologyto transform tailings into other resources, thereby improving resource utilization rates. In addition, the Companyactively benchmarks against advanced domestic enterprises, conducts investigations and studies, and collaborateswith universities such as Kunming University of Science and Technology to carry out technical research on topicssuch as comprehensive recovery of tailings and comprehensive utilization of tailings pond resources.

Comprehensive Utilization of Tailings

The construction project of the synchronous tailings paste ?lling system at Datun Tin Mine involves using tailings to?ll underground mining voids after the tailings produced by the Datun Tin Mine Concentrator have been cemented,in accordance with industrial policies and relevant national environmental protection policies. The filled tailingsreplace traditional building materials, reducing production costs while also reducing the pollution and damagecaused by tailings to environmental resources such as soil, water sources, and air. This further realizes the e?cientutilization of resources and protects the stability and sustainable development of the ecological environment.

Case

Actively Responding to National Ecological Environmental Protection Policies and Improvingthe Utilization Rate of Tailings Resources

Tailings paste ?lling pipeline

Tailings transport by long-distance pipeline

Guarding the Earth and Drawing a Picture of Green Prosperity

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2023 Environmental, Social, and Governance (ESG) Report

Technical Transformation ofPower InfrastructureCarbon Sink ProjectDevelopmentEnergy-Saving Technological

Transformation

Energy Saving and Emission Reduction Measures

Climate Response ActionsThe Company actively responds to the national strategies of "carbon peaking" and "carbon neutrality", and vigorouslycarries out related work arrangements and deployments to reduce carbon emissions. From the perspective of the entireindustrial chain's lifecycle, the Company proactively conducts baseline studies of greenhouse gas emissions, integrates intothe national energy "dual control" and carbon emissions "dual control" strategies, and continuously advances the layout ofgreen, low-carbon industries. Through digital means, the Company strengthens the management of electricity consumption inproduction, plans the construction of an energy information management and control platform, and gradually reduces the unitconsumption of comprehensive electricity in mining and smelting. This results in a year-by-year reduction in the Company'sgreenhouse gas emissions per CNY 10,000 of output value, contributing to the early realization of the "dual carbon" goals.

Improvement of Energy

Structure

Active Exploration of Ecosystem Carbon Sequestration: Through mine reclamation, a?orestation, andecological restoration, the Company actively explores green mining models that are combined withecological carbon sink management.

Waste Heat Power Generation Project: The Company continues to advance the technologicaltransformation of smelting waste heat power generation. Steam turbines have been installed in the TinBranch, Copper Branch, and Wenshan Zinc Indium. The transformation work has been fully rolled out, witheach unit generating approximately 35 million kWh, 45 million kWh, and 13 million kWh annually.Frequency Conversion Energy-Saving Technological Transformation of Major Equipment: TheCompany continues to promote frequency conversion speed regulation and energy-saving technologicaltransformation of major energy-consuming equipment such as fans, water pumps, and electric locomotives.Each piece of equipment saves 15% of electricity annually, effectively improving equipment operatinge?ciency and safety reliability.Permanent Magnet Motor Project: The Company continues to promote the transformation of permanentmagnet direct-drive energy-saving technologies such as rod mills, ball mills, flotation machines, andshaft hoists in mineral processing. Each piece of equipment saves 20% of electricity annually, effectivelyimproving equipment operating e?ciency and signi?cantly reducing spare parts consumption.

Power Infrastructure Upgrading and Transformation: The Company continues to promote theoptimization of power supply lines and the capacity expansion and transformation of 35kV and 10kVsubstations to e?ectively improve power supply reliability and reduce power supply line losses.Power Line Power Factor Management: To ensure the power factor of the lines is above 0.9, theCompany has strengthened the maintenance and operation management of centralized compensationand low-voltage local decentralized compensation devices, reducing electricity expenses by about 3.3million yuan each year.

Optimization of Energy Consumption Structure: The Company actively increases the proportion ofnon-fossil energy consumption. In 2023, Tin Branch actively promoted the natural gas substitution forcoal project, which has now completed project construction and is in the debugging optimization stage.It is expected to be put into normal use in 2024.Mining Belt Transport Power Generation Project: Hualian Zinc Indium utilizes the potential energygenerated by the 1#, 2#, and 3# belts during transportation and converts it into electrical energy, withan annual power generation of 7.4 million kWh.Use of Clean Energy: The Company increases the proportion of clean energy use such as solar energyand wind energy, purchases green electricity, and increases the use of new energy vehicles to replacefuel vehicles.

Total greenhouse gas emissions were837,352 tons under Scope II.Through emission reduction measures, theCompany directly reduced greenhouse gasemissions by15,041 tons.

The Company utilized

1.448 billion KWH of

clean energy sources such as water, wind, and solar,accounting for80% of its total energy use.

In 2023, the Company's total greenhouse gas emissionswere754,898 tons under Scope I.

2023

Key Performance

Guarding the Earth and Drawing a Picture of Green Prosperity

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2023 Environmental, Social, and Governance (ESG) Report

Mineral Resources Protection

Strategic key minerals refer to a category of mineral resources that are vitally important to national economicdevelopment and indispensable to strategic emerging industries. They are of utmost importance in ensuringresource security. Tin, being one of the 24 minerals listed in the national strategic mineral directory, is a resource thatthe Company has the responsibility and obligation to steadfastly protect in terms of its stability and security.To this end, the Company actively promotes both the "increase in source" and "reduction in consumption" of mineralresources. It implements a new round of prospecting breakthrough strategic actions with an "internal explorationand external expansion" approach, strengthens the protective development and utilization of resources, activelycarries out geological prospecting, expands the scale of resources, optimizes mining and selection indicators, andimproves resource utilization e?ciency. This all contributes to safeguarding the national strategic mineral resources.

· By formulating relevant regulations such as the "Mineral Resources Reserve Management Measures ofYunnan Tin Industry Co., Ltd." and the "Geological Prospecting (Exploration) Management Measures ofYunnan Tin Industry Co., Ltd.", the Company's management covers the entire process from geologicalexploration, resource expansion, upgrading and densi?cation, utilization and consumption to the end ofmining.· The Company has achieved new tin and copper resources to reach the scale of medium-sized mines,

laying a resource foundation for its sustainable, high-quality, and green development.

"Open Source"

· Improving the utilization rate of minerals: With the daily adjustment meeting as the starting point and the

special meeting as the entry point, the Company gradually reconstructs the mine production schedulingmanagement system, timely corrects and solves the problems of mining loss rate, ore dilution rate, andbeneficiation recovery rate that occur during the production process, and continuously improves thequality of production operations.

"Resource Conservation"

In 2023, to ensure the stable operation of key projects, the Company's leadership formed several specialized workinggroups. These groups, composed of more than 100 professionals, carried out the preparation of resource reserveveri?cation reports for the mining rights of subordinate companies and their managed units. Currently, the initialdrafts of resource reserve veri?cation reports for several units have been completed and are actively being preparedfor review.

CaseVeri?cation of Mineral Resource Reserves to Advance the Protection of Mineral Resources

In November 2023, the Company convened a warning education conference on protecting factories and mines, whichwas attended by over 240 people. The Company put forth four requirements for the work of protecting factoriesand mines, namely, "unifying thoughts, solidifying responsibilities, forging loyalty, and enhancing collaboration". Inaddition, the Company produced and collectively viewed the warning educational ?lm "Ants Causing the Dam Break"for factory and mine protection. Through a series of publicity and educational measures, the Company strengthenedsource control, accurately remedied deficiencies, and promoted the in-depth implementation of comprehensivegovernance for factory and mine protection. The Company adopted multiple measures such as crackdown, blockade,and prohibition to jointly construct a resource security barrier and ensure the stable supply of resources.

Case

Warning Education Conference on Protecting Factories and Mines, Strengtheningthe Safety Barrier of Mine Resources

Convening a warning education conference on protecting factories and mines

Leading with EnvironmentalResponsibilityand GreenMission

Responsive SDGs

The Company thoroughly implements Xi Jinping's socialist thoughtwith Chinese characteristics and ecological civilization thought inthe new era, adheres to the "two supremacies" and "two mountainstheory", and ?rmly establishes the concept of green development.The Company continuously improves the construction of theenvironmental management system, establishes a dedicatedmanagement organization to lead, incorporates ecologicalenvironment protection work into the development plan, fullyconsiders the impact of production and operation on the ecologicalenvironment, rationally utilizes energy and conserves resources,bravely shoulders environmental responsibilities and missions, andensures green and sustainable development.

5354

Leading with Environmental Responsibility and Green Mission

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2023 Environmental, Social, and Governance (ESG) Report

Environmental Management

The Company adheres to the environmental protection policy of "Pursuing Excellence, Integrity and Compliance,People-Oriented, Energy-Saving and Low-Carbon, Green Development". Through the in-depth promotion ofenvironmental protection culture and continuous improvement of the environmental management system, theCompany supports sustainable development.Modern environmental management system of Yunnan Tin

The Company and its subsidiaries conscientiously implement the requirements of relevant laws and regulations on ecologicalenvironment protection. The Company has formulated seven management systems, including the "Measures for theManagement of Ecological Environment Protection", "List of Responsibilities for Ecological Environment Protection", and"Measures for the Inspection and Supervision of Ecological Environment Protection", which cover water, air, noise, and waste.The Company has also established five major environmental management objectives: "pollutant discharge concentrationmeets internal control standard requirements, total pollutant discharge complies with emission permit requirements, solidwaste is disposed of in compliance with regulations, no occurrence of sudden environmental incidents, and no administrativepenalties imposed by government departments". During the reporting period, neither the Company nor its branches(subsidiaries) have been subject to administrative penalties for environmental protection.

Environmental Management System

ISO14001 Environmental Management System Certi?cation

Dynamic Managementof Pollution Sources

List and ControlMeasures List

Basic PathFundamental Goal

Prevent and Resolve

FundamentalEnvironmental Risks

and ManagementObjective Risks

Control of PollutionSourcesCoreGuarantee

Regular DynamicTracking and StrictAccountabilityModernEnvironmentalManagement System

The signing site of the Company's Safety and Environmental Protection Responsibility Agreement in 2023

In 2023, in accordance with the principle of "horizontal to the edge, vertical to the bottom", the Company signedthe "2023 Production Safety and Ecological Environment Protection Responsibility Agreement" with its subsidiariesand departments at all levels, incorporating environmental protection target indicators into the assessment ofthe environmental protection responsibility agreement. With the comprehensive supervision of the Safety andEnvironmental Protection Department, the specialized management of various business departments, and themanagement mechanism responsible for each unit, the Company has solidi?ed safety and environmental protectionresponsibilities at all levels, achieving grid-style management of safety and environmental protection.

CaseSigning the "2023 Production Safety and Ecological Environment Protection Responsibility Agreement",Deepening the Implementation of Organizational Environmental Protection Responsibilities

The Company and its subsidiaries strictly implement the requirements of laws and regulations such as theEnvironmental Protection Law,Environmental Impact Assessment Law, "Regulations on Environmental ProtectionManagement of Construction Projects", "Interim Measures for Environmental Protection Acceptance of CompletedConstruction Projects", and "Management Measures for Post-Assessment of Environmental Impact of ConstructionProjects (Trial)". They strictly adhere to the "Three Simultaneities" principle for environmental protectionequipment and facilities during project construction. During the feasibility study stage of project construction,ecological environment protection measures are considered as an important basis. In the process of project design,construction, and operation, the Company promotes environmental management work in accordance with the law.

Environmental Compliance Management

Leading with Environmental Responsibility and Green Mission

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2023 Environmental, Social, and Governance (ESG) Report

EIA approval for design change of safety facilities of Huafen Tailings Pond Project (left); EIA approval for technicaltransformation of quality improvement and e?ciency enhancement of Hualian Zinc Indium Xintian Workshop (right)

The Company insists on managing project work in accordance with the law and strengthens the supervision and guidancethroughout the entire process of project construction. In 2023, the Company completed the environmental impactpost-assessment and ?ling for two ore dressing technical renovation projects and one smelting project, and completedfour independent environmental protection acceptances upon completion and one phased environmental protectionacceptance. Through proactive management of its own projects' compliance, the Company actively promotes thestandardization of projects.In 2023, three projects received EIA approval, including the design and construction of safety facilities changes for theHuafen Tailings Pond at Datun Tin Mine, the construction of the synchronous tailings paste ?lling system at Datun TinMine, and the technical transformation for quality improvement and e?ciency enhancement at Hualian Zinc Indium'sXintian Workshop. Seven projects obtained EIA registration forms, including the Jiajieshan Domestic Sewage RenovationProject at Datun Tin Mine, the project to add a shed to the Laochang 1800 Raw Ore Pile Plant, and the Safety andEnvironmental Protection Renovation of the Kafang 3# Pit Raw Ore Pile Plant.

CaseJoint Advancement of Multiple Projects, Building a Project Compliance Management System

The Company diligently implements Xi Jinping's Thought on Ecological Civilization, focusing closely on thetheme of "building a modern harmonious coexistence between human and nature" and the "Sixth Five-Year Plan"environmental day. The Company and its subsidiaries earnestly implement relevant laws and regulations onecological environment protection, incorporating ecological environment protection training into the employeetraining plan. Through various training methods such as theoretical study of the Party Committee's central group,specialized training, external training, and internal training, the Company promotes the study of environmentalprotection laws and regulations and pollution prevention technology among employees.

Safety and Environmental Protection Training Activities

Environmental protection training conducted by experts

from the Chinese Research Academy of Environmental

Sciences and Yunnan Research Academy of Eco-

environmental Sciences

Datun Tin Mine conducting typical case study of central

environmental protection supervision

Wenshan Zinc Indium and Hualian Zinc Indium conducting specialized training on online monitoring of pollution sources

In 2023, the Company and its subsidiaries and workshops carried out ecologicalenvironment protection knowledge training 471 times for a total of 32,076individuals.

2023

Key Performance

Leading with Environmental Responsibility and Green Mission

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2023 Environmental, Social, and Governance (ESG) Report

Site of promotional activitiesCopper Branch (left) and Hualian Zinc Indium (right) viewing the promotional

?lm of June 5 Environment Day

"Ecological Environment Protection Knowledge Manual of Yunnan Tin Co., Ltd."

In 2023, to further promote employees' understanding of ecological environment protection knowledge, theCompany compiled the "Ecological Environment Protection Knowledge Manual". This manual covers eightaspects including laws and regulations of ecological environment protection, atmosphere, water, solid waste, soilenvironment, noise pollution prevention and control, emergency management of sudden environmental incidents,and a checklist for common ecological environment issues. It is distributed to all departments and subsidiaries forstudy, helping employees better grasp the knowledge of environmental protection.

In 2023, the Company closely focused on the theme of "Building a Modern Harmonious Coexistence between Manand Nature" for the June 5 Environmental Day. In line with the Company's actual situation regarding ecologicalenvironment protection and green development, the Company issued the "June 5 Environmental Day PublicityProgram 2023". The Company carried out activities for the June 5 Environmental Day through thematic posters,thematic propaganda, hanging slogans, and pushing information on ecological environment protection throughWeChat public accounts. This further promoted the popularization and learning of knowledge on ecologicalenvironment protection.

Case

Compilation of the Ecological Environment Protection Knowledge Manual toEnhance Employees' Environmental Protection Knowledge Reserve

Case

June 5 Environmental Day Activities, Learning to Implement Laws and Regulations onEcological Environment Protection

Resource Management

The Company strictly implements national mandatory standards such as the "EnergyConsumption Limit for Unit Products of Non-ferrous Heavy Metal Smelting" and the "EnergyConsumption Limit for Unit Products of Tin Concentrate". It strictly controls the comprehensiveenergy consumption of mining (stripping), mineral processing, and smelting, and revises the"Quality, Environment, Occupational Health, and Energy Management Manual" to establish anenergy management system.To reduce energy consumption and improve energy efficiency, the Company actively carries outenergy-saving transformation actions in areas such as technical transformation of basic powerfacilities, energy optimization, energy-saving technical transformation, and energy-saving specialprojects. Through strengthening the innovation of process technology and equipment, theCompany achieves energy saving and consumption reduction, seizes the opportunity of cleantechnology development, and becomes a practitioner and guardian of ecological civilizationconstruction.

Energy Management

ISO 50001 Energy Management

System Certificate

The energy consumption in 2023 was as follows

Energy Consumption

Index

Unit202120222023Natural GasCubic Meter9,276,0548,379,6217,806,890

Raw CoalTons125,880127,926132,544

DieselTons25,97223,88024,981GasolineTons198192176Renewable EnergyKilowatt Hour1,599,870,3001,618,126,0671,750,007,924Outsourced ElectricityKilowatt Hour1,919,218,3921,973,324,4722,011,503,361

· The comprehensive energy consumption for mining and mineral processing was set to decrease by 1%

year-on-year, based on the average value of the previous three years.

· The comprehensive energy consumption for smelting was set to decrease by1% year-on-year, based onthe actual target in 2022.

· The comprehensive energy consumption per unit product of tin smelting enterprises was set to be less

than or equal to1550 kgce/t.

In 2023, the Company's energy consumption target:

Leading with Environmental Responsibility and Green Mission

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2023 Environmental, Social, and Governance (ESG) Report

The Company has established water resource management systems and policies such as the "Water Supply and DrainageManagement Measures", with a focus on water conservation, protection of water sources, and reduction of water intake risks.In addition, the Company actively promotes the development of national water-saving enterprises, adheres to the "EvaluatingGuide for Water Saving Enterprises (GBT7119-2018)", conducts inspections in line with these requirements in daily waterresource management, actively promotes water-saving awareness, optimizes the use of water resources in the productionprocess, and saves new water consumption at the source by improving process ?ows and optimizing equipment.

In strict compliance with legal and regulatory requirements, the Company and its subsidiaries have diligentlyimplemented measures for the prevention and control of water pollution. Regular inspections are conducted to identifypotential risks of water pollution. In line with newly issued standards, norms, and policy requirements, the Company hasidenti?ed and addressed de?ciencies in its water environment, enhancing relevant facilities where necessary.

Water Resources Management

The data on water resource usage for the year 2023:

Risk Management of Water Resources

Indicators of Water ResourcesUnit 202120222023

Groundwater Cubic Meter 4,305,553.004,018,195.001,571,053.00Third-party Water SupplyCubic Meter 387,759.48268,229.007,104,020.00Water Use IntensityCubic Meter/CNY 10,0001.291.021.83Circulating Water Consumption Cubic Meter 108,690,331.00124,734,207.10218,560,009.00

The Company's basic policy requirements for water resources managementThe Company has drawn an overall water flowchart, established a ledger for water meteringequipment, created a water consumptionbalance sheet for each subsidiary, and conducts acomprehensive analysis of the water consumptionof each unit on a quarterly basis.

The Company has improved the water resourcesmanagement structure, clarified energyconservation management functions, assigneda person in charge of energy management andfull-time energy administrators, and formulatedenergy consumption assessments and indicatorsfor each main process, conducting assessmentson a monthly basis.

The Company has improved water utilization rates,implemented graded recycling of wastewater andsewage, reduced the scale of water treatmentfacilities, and ensured drainage is recycled in agraded manner according to its water quality.

The Company carries out maintenance of waterusage equipment for each unit to prevent anyoccurrences of leakage, seepage, dripping, orspillage.

Basic PolicyRequirements forWater ResourcesManagement of

the Company

Emission ManagementIn an effort to reduce the emission of the "three wastes", the Company has established the "Ecological EnvironmentInspection and Supervision Management Measures" and a specialized management system. Each branch (subsidiary) ofThe Company has proposed internal control standard limits for the emission of major pollutants, all of which are lowerthan the national standard values. Measures have been implemented to promote compliance and standard emissions.

The Company strictly adheres to the policies and systems of the "14th Five-Year Plan for Eco-environmentalProtection of Yunnan Province" and the "14th Five-Year Plan for the Prevention and Control of Industrial SolidWaste and Heavy Metal Pollution of Yunnan Province". the Company strictly enforces the relevant requirements ofpollutant discharge permit management regulations and pollutant discharge standards. The Company identi?es thetypes of pollutants produced in the production and operation links of the Company and its subsidiaries. An annualmonitoring plan is formulated for monitoring management, the construction of treatment facilities is optimized andmaintained for stable operation, and all waste gases are discharged up to the standard after treatment.

Waste Gas Treatment

Since 2023, enterprises in the lead, zinc, and copper smelting industries in key regions have implemented therequirements of special emission limits for particulate matter and key heavy metal pollutants. They have earnestlyimplemented the requirements of environmental documents issued by local governments, organized and plannedthe implementation of special emission limits for particulate matter and key metal pollutants, and accelerated thepromotion of waste gas collection and treatment. The management of exhaust emissions is continuously improved.

CaseStrict Implementation of Policies and Regulations, Active Enhancement of Equipment Technology Upgrades

Achievement: The particulate matter has met the special emission limit requirements.

Upgrading and transformation of the dust collection equipment

Achievement: The average emission concentration of the tail gas from sulfuric acid productionhas been reduced by over 30% through the technical upgrading and transformation of thesulfuric acid tail gas spray system.Technical transformation of amine liquid return pipe for sulfuric acid tail gas dust

Measure 1: Harden the original raw ore storage yard and add a canopy.Measure 2: Replace the original over?ow water ?lm dust collector and multi-tube impingement

dust collector with a high-e?ciency wet dust removal unit, and complete theconstruction of the 5000 t/d process supporting dust collector upgrade project.Achievement: Improve the e?ciency of dust collection and removal, and e?ectively controlthe unorganized emission of waste gas and the risk of air pollution.

Environmental remediation and upgrading of the 3# Pit Raw Ore Storage Yard

WenshanZinc Indium

KafangBranch

Rigorously implement the optimization and upgrading of dust removal equipment in accordancewith the plan, and consistently report the progress of the work to the local ecological environmentauthorities.Formulation and implementation of an ultra-low emission plan

Waste gas treatment measures of each branch (subsidiary)

CopperBranch

Leading with Environmental Responsibility and Green Mission

6364

2023 Environmental, Social, and Governance (ESG) Report

The Company employs dust suppressants, dust-proof nets, and sprinkling measures to mitigate the impactof unorganized exhaust gas on the ambient air. Various units have adopted dust reduction measures such asenclosures, coverings, atomized sprinkling, and ceiling construction in raw and auxiliary material yards and materialtransportation stages. These measures e?ectively suppress the generation and emission of dust.Hualian Zinc and Indium has installed sprinkling facilities and an air quality particulate matter monitoringsystem along its transportation routes. The Company has implemented interlocking control of particulate matterconcentration monitoring and sprinkling facilities. Fog cannon dust suppression facilities have been installed in theDaping bene?ciation workshop to reduce the risk of dust pollution in raw ore yards and open pits.

The Laochang Branch has completed environmental treatment work for 1,800 ore stacking platforms. The Companyhas added ground hardening, enclosures, canopies, and sprinkling dust suppression facilities to further control dustgeneration.

CaseCoordinated Implementation of Multiple Measures to E?ciently Reduce Exhaust Emission Pollution

Spray dust suppression device in the Daping bene?ciation workshop of Hualian Zinc and Indium

Dust-proof net laid on the dry beach of the tailings pond of the Laochang Branch

Name of theCompany or

Subsidiary

Names of MainPollutants andCharacteristicPollutants

Number ofDischarge

Outlets

EmissionConcentration

ImplementedPollutantDischargeStandards

Total Discharge

Amount fromthe MainDischargeOutlet

Approved TotalDischargeAmount fromthe MainDischargeOutlet

Tin Branch

Particulate Matter210.5-27.7mg/m?30mg/m

26.06t47.02t

Sulfur Dioxide21.7-283mg/m

400mg/m

16.77t430t

Nitrogen Oxides21.34-152mg/m

200mg/m

63.99t169.1t

Copper Branch

Particulate Matter

130-60.5mg/m

80mg/m

14.966t55.962t

12.85-3.5mg/m

50 mg/m

Sulfur Dioxide30.80-52.75mg/m

400 mg/m

53.739t440.565t

Wenshan ZincIndium

Particulate Matter19

1.17-69.8mg/m?80mg/m?

6.77t20.701t11.9-15mg/m?120mg/m?

15.5mg/m?20mg/m?

Sulfur Dioxide4

23.93-185mg/m?400mg/m?

51.57t181.95t

5mg/m?50mg/m?Nitrogen Oxides1

12.05-28.67mg/m?240mg/m?

32.38t90.07t

18mg/m?200mg/m?

Key Performance

The waste water generated by the Company primarily originates from the production processes of mineral processing, smelting,and deep processing units. The main pollutants in the water body are chemical oxygen demand (COD), ammonia nitrogen,and heavy metals. The Company has established a stringent "Waste Water Pollution Prevention and Control Management"system to ensure compliance with relevant national and local laws and regulations. Simultaneously, a systematic monitoringmechanism has been set up to regularly sample and monitor production waste water.Furthermore, in accordance with the principle of "diversion of clean and polluted water, diversion of rainwater and waste water,

Waste Water Treatment

Leading with Environmental Responsibility and Green Mission

6566

2023 Environmental, Social, and Governance (ESG) Report

Waste water treatment measures of each branch (subsidiary) of the Company

Wenshan Zinc

Indium

Waste water is classified and reused nearby to improve the comprehensive utilization rateof waste water: Wenshan Zinc Indium insists on controlling from the source and systematicallysorting out the generation nodes of waste water. It comprehensively sorts out and classifiesthe generation, treatment, reuse, and discharge of waste water to maximize the utilization ofproduction waste water and improve the comprehensive utilization efficiency of waste water.Through technical improvement, the waste water treatment is reduced by about 450,000 m? peryear, and the cost of waste water treatment is saved by more than CNY 1.5 million.

Hualian ZincIndium

Clean water and sewage are diverted to reduce the total amount of waste water at the source:

Hualian Zinc Indium has completed the construction of the Wawadong Clean Water and SewageDiversion Project of the Nanjia Tailings Pond. By diverting the clean water outside the NanjiaTailings Pond, the water outside the reservoir is reduced to enter the tailings pond, and thetreatment capacity of tailings waste water is further reduced.

Impermeable membrane to prevent and control the risk of wastewater pollution: In 2023,Hualian Zinc Indium Daping Beneficiation Workshop continuously improved the pollutioncontrol facilities of the raw ore storage yard. Impermeable membranes are laid in the raw materialstorage yards of the AB system and C system respectively, and surface water collection facilitiesare constructed in the storage yard. This effectively prevents and controls the risk of soil andgroundwater pollution caused by the over?ow of leachate from the storage yard.

Sewage collection project construction increases sewage collection and treatment capacity:

The Datun Tin Mine and Smelting Branch respectively collect domestic sewage from the JiayiMountain area and the Baishachong area. The Laochang Branch has completed the construction ofthe sewage collection and treatment project in the Tangziao area of the old factory. The completionand use of these three projects result in an annual in?ow of 80,000 tons of sewage into the city'sdomestic sewage pipe network and a treatment volume of 50,000 tons.Datun Tin Mine,Smelting Branch,Laochang Branch

Impermeable membrane is laid in the raw ore storage yard eegarotsof Hualian Zinc Indium

Daping Workshop

UnitWaste Water Treatment Initiatives

diversion of di?erent types of waste water", the Company and its branches (subsidiaries) have set up rainwater and sewagenetworks. These networks classify and collect production waste water, initial rainwater, and domestic sewage. They haveconstructed facilities such as sedimentation tanks, initial rainwater collection tanks, production waste water treatment systems,and domestic sewage treatment systems to implement classi?ed collection and treatment of waste water.

Key Performance

Name of Subsidiaryand Discharge Outlet

MajorPollutants

Discharge Mode

Emissionconcentration

Implementedpollutantdischargestandards

Total dischargeamount fromthe maindischargeoutlet

Approvedtotal dischargeamount fromthe maindischargeoutlet

Yunxiang Mining andMetallurgy's InitialRainwater Outlet

COD

Centralized WasteWater Discharge

3.96 ㎎/L60 ㎎/L11.61kg1500kgAmmoniaNitrogen

Centralized WasteWater Discharge

0.269 ㎎/L8 ㎎/L0.789kg200kgCooling CirculatingWaste WaterDischarge Outletof Wenshan ZincIndium

COD

Centralized WasteWater Discharge

16.97-33.93mg/L60mg/L2.45t3.42tAmmoniaNitrogen

Centralized WasteWater Discharge

0.011-0.17mg/L8mg/L7.5kg472kgDischarge Outletof Dagou TailingsPond in HualianZinc Indium CopperStreet

COD

Centralized WasteWater Discharge

11--29mg/L60mg/L5.71t129tAmmoniaNitrogen

Centralized WasteWater Discharge

0.13--3.51mg/L8mg/L0.58t8.6t

Discharge Outlet ofHualian Zinc IndiumNanjia Tailings Pond

COD

Centralized WasteWater Discharge

6--27mg/L60mg/L9.42t59.32tAmmoniaNitrogen

Centralized WasteWater Discharge

0.1--0.69mg/L8mg/L0.23t7.91t

The Company is committed to promoting sustainable development and environmental protection. It diligentlyimplements the requirements of laws and regulations such as theLaw of the People's Republic of China onPrevention and Control of Environmental Pollution by Solid Wasteand enforces a mandatory classi?cation systemfor the solid waste it generates. In 2023, the solid waste produced by the Company primarily consisted of waste rocksand tailings from mining and selection units, general industrial solid waste such as water-quenched slag and gypsumslag from smelting units, and hazardous waste such as arsenic-containing slag and leaching slag.

Waste Disposal

Leading with Environmental Responsibility and Green Mission

6768

2023 Environmental, Social, and Governance (ESG) Report

The Company hasestablished a managementsystem to ensure that theclassi?cation, storage,transportation, andtreatment of waste complywith environmentalprotection regulations andstandards.

The Company encouragesemployees to participate inwaste recycling activities,promoting the reuseof resources and thedevelopment of a circulareconomy.

The Company reduceswaste generation throughmeasures such asdesignated storage of solidwaste.

Strengthening Waste

Management

Promoting Resource

Recycling

Improving ControlMeasures

The Company's waste management process

The Company focuses on the full-process management of hazardous waste from generation, collection, transfer, storage,and disposal. It has formulated relevant environmental management assessment methods for projects like Datun TinMine, set reduction targets, and requires each waste-producing unit to be primarily responsible for the management ofeach stage. The Supply and Marketing Workshop is the main unit responsible for the management of hazardous wastethroughout the mine. The Safety and Environmental Protection Department carries out comprehensive supervision andimproves the sta?'s ability to manage hazardous waste through training and awareness campaigns.

To advance high-quality,zero-harm hazardous wastemanagement capabilities, theCompany's Datun Tin Minehas conducted specializedtraining on the interpretationof technical specificationsfor setting up hazardouswaste identification marks.Through employee educationon changes in hazardouswaste signs and labels, andexplanations of the "threestandards and three codes" ofhazardous waste, employeesare taught how to intelligently

The Company actively optimizes waste treatmenttechnology. The Copper Branch's research project onadvanced treatment technology for copper smeltingwaste acid wastewater has been completed and putinto operation, helping the Copper Branch reduce theproduction volume of arsenic-containing hazardouswaste by more than 50%. In addition, the CopperBranch has completed the research on the technologyof extracting valuable metals from copper smeltingdust and the technical upgrade and transformation ofthe original copper smelting dust treatment project.This can add about 12,000 tons of hazardous waste for

Case

Conducting Hazardous Waste Technical Speci?cation Training to Enhance Employees'Hazardous Waste Management Skills

CaseStrengthening Technical Research and Improvement to Optimize Waste Disposal Work

Explanation of hazardous waste knowledge

Research project on advanced treatment of acidic waste

water in the Copper Branch

The Company's General Industrial Solid Waste Situation

Year

Output(10,000 tons)

Self-utilizationamount(10,000 tons)

Self-disposal

amount(10,000 tons)

Outsourcingdisposal amount(10,000 tons)

Storage capacity(10,000 tons)20213,124.71185.282,846.0393.4020222,980.19286.342,579.59112.821.4420236,076.31123.035,813.25139.890.14

manage and track hazardous waste situations. This has further improved the efficiency of hazardous wastemanagement work and strengthened employees' understanding and ability to manage hazardous waste.

resource utilization every year. Through technical improvements, Wenshan Zinc Indium has realized the conversionof neutralized slag from hazardous waste to general industrial solid waste, reducing the annual production ofhazardous waste by more than 20,000 tons.

The Company's Hazardous Waste SituationYear

Output(10,000 tons)

Self-utilization

amount(10,000 tons)

Self-disposalamount(10,000 tons)

Outsourcingdisposal amount(10,000 tons)

Storage capacity(10,000 tons)202121.197.176.197.820.01202223.278.735.858.620.07202321.6310.183.867.300.29

Leading with Environmental Responsibility and Green Mission

6970

2023 Environmental, Social, and Governance (ESG) Report

Environmental Safety

The Company consistently adheres to the concept of environmental safety. It strives to build a robust occupationalhealth and safety management system, establish a risk control and emergency management system, and create asafety culture brand with company characteristics. All these e?orts provide a strong guarantee for the Company'shigh-quality development.

In 2023, to further prevent environmental safety risks, the Company continuously improved its environmental safetymanagement system. It timely updated the "Technical Guidelines for the Construction of Dual Prevention Mechanismfor Environmental Management - Investigation and Treatment of Environmental Hidden Dangers", the "List of RiskGrading Control Measures", and the "Management System of Dual Prevention Mechanism for Safety Risk GradingControl and Hidden Danger Investigation and Treatment". The Company formulated the "Criteria for DeterminingMajor Safety Risks (Trial) of Yunnan Tin Co., Ltd.", formed a list of major risks, and established a comprehensiveemergency management system. This system helps eliminate hidden dangers of accidents, cut off the chain ofaccidents, and ensure the steady and sound development of the Company's safe production.

Emergency Management System

Emergency management system of the Company

Emergency rescue group, medical rescue group,

and other 9 functional groups

Production Safety AccidentEmergency Rescue Leading

Group

Emergency Command

Various emergencyprofessional groups

Emergency Management Center

Drill for mine roof fall and rib spalling Drill for underground water penetration

Wenshan Zinc Indium conducting comprehensive

emergency drill for sulfur dioxide leakage

Drill for waste mineral oil leakage accident

During the reporting period, to enhance the e?ectiveness of emergency rescue, the Company carried out targeted practicaldrills of emergency plans such as mine roof fall, poisoning and asphyxiation, underground water penetration, and geologicaldisasters. It also conducted emergency rescue drills for con?ned space operation accidents, waste mineral oil leakage accidents,road traffic accidents, object strike injury accidents, and fire safety accidents. These drills effectively improved the staff'spractical experience in emergency rescue and their ability to avoid disasters and emergencies in a timely manner.

CaseOrganizing Emergency Rescue Training to Strengthen Employees' Practical Abilities

During the reporting period, the Company organized 89 actual combat emergency drills,with a total of2,434 people participating in and observing the drills.The Company carried out4 inspections and assessments, 77 routine supervisoryinspections, and4 rounds of major accident hidden danger investigation and remediation.

2023

Key Performance

Leading with Environmental Responsibility and Green Mission

7172

2023 Environmental, Social, and Governance (ESG) Report

The Company is committed to enhancing the innovative efficiency of deep processing, ensuring safety issues,consolidating the foundation of resources, improving the e?ciency of safety protection with digital technology, andaccelerating cost reduction, quality improvement, and e?ciency enhancement.

Safety Innovation Technology

In November 2022, electronic detonators were put into use in Datun Tin Mine, and 18 electronic detonatorauthentication base stations were installed. By the end of May 2023, the non-electric second detonator was fullyupgraded to a digital electronic detonator. This promoted the transformation of detonating materials towards a safe,reliable, and e?cient direction, e?ectively avoiding the possibility of misoperation detonation. Compared to ordinarydetonators, it is safer and more reliable, providing a guarantee for the safety and e?ciency of mine production.

CaseDigital Electronic Detonator Technology to Strengthen Mine Safety Management and Control

To promote the mechanization and high-quality developmentof mining, the Company's Datun Tin Mine introduced a boom-type roadheader and put it into use. Compared to traditionalblasting excavation methods, the boom-type roadheader notonly enhances the e?ciency of excavation but also signi?cantlyimproves the safety of excavation construction. Firstly, byreplacing explosives, it eliminates the risk of blasting injuriesand poisoning asphyxiation. Secondly, the construction causesless disturbance to the rock mass, maintaining better integrityand higher stability of the rock mass, which reduces the risk ofrockfall injuries. Additionally, through the installation of a mine-

CaseIntroduction of More E?cient Boom-Type Roadheader to Promote Green and Safe Development of Mining

Boom-type roadheader promoting green and safe

development of mining work

The delay time of the pipe section is set on the operation site, which can be detonated hole byhole or by section, with a maximum blasting delay of 60 minutes.The digital electronic detonator has strong anti-AC/DC, anti-static, and anti-radiation interferencecapabilities. It can be detonated only when all the procedures such as downloading the registrationcode, scanning the code for con?rmation, connecting to the line, and networking are completed.The information of the detonator itself and the identity information of the blaster are collectedtogether by scanning the code. The detonation password is designed to be bound by threecodes. When detonating the electronic detonator, a special detonation password is required.

Three advantages of digital electronic detonatorSafe and e?cient,

controllabledetonation timeAvoiding the riskof misoperationdetonationReducing the risk oftheft and illegal use

To ensure the safety of production and personnel, the Company and its branches (subsidiaries) have established andimproved the mass monitoring and prevention system for hidden geological hazards. They have coordinated 19 mines inaccordance with the provisions of the "Contingency Plan for Geological Hazards" to increase the number of key preventionand control areas listed at the county (city) level (17 in Gejiu mining areas and 2 in Maguan mining areas). They carry outregular pre-?ood investigations, mid-?ood inspections, and post-?ood geological hazard hidden danger investigations,monitor relevant waste rock sites monthly, and regularly carry out annual propaganda and training on geological hazardprevention and control and emergency drills. This enhances their ability to recognize and report disasters, monitor andwarn disasters, and avoid disasters and respond to emergencies.

Land Disaster Control and Prevention

The Company consistently adheres to the principle of prevention ?rst, combining prevention with control. To timelydiscover, report, and handle potential disasters, the Company has implemented cascade slope control projects for1920 geological disaster sites and Hualian Zinc Indium Manjiazhai open-pit mine according to the characteristics ofslope rock mass. This includes table reinforcement, sloping, ?lling and leveling, greening and reforestation, forminga cascade slope to prevent slope instability.In addition, Hualian Zinc Indium Manjiazhai Open-pit Mine has introduced important safety facilities such as theLeica TM30 measuring robot and slope real aperture radar to comprehensively carry out online monitoring and earlywarning of high-risk slope displacement. This greatly improves the prevention of geological disasters, achieves earlyprevention, early governance, and avoids the possibility of geological disasters.

Case

Establishing and Improving the System of Mass Monitoring and Mass Prevention of Geological Hazards,Ensuring the Safety of Production and Personnel Across All Locations with Digital Measures

Hidden danger investigation system

mounted dust collector, the dust reduction e?ect at the excavation front is enhanced, further reducing the harm tominers from dust and waste generated during the excavation process.

In 2023, the Company installed 29 monitoring points in 16 waste rock yards and useda total station to conduct over100 inspections.

2023

Key Performance

Lean ManagementEmpowering Diverse Values

Responsive SDGs

The Company firmly believes that quality is the lifeblood of anenterprise. It adheres to the principles of honesty and legality in itsproduction and business activities. Through continuous explorationand innovation, and active interconnection, it not only achieves win-win cooperation but also continually enhances the internationalinfluence of China's tin industry. With the aid of high-qualitydigital transformation and industrial development, the Companyis committed to creating a higher quality product system andgenerating value for its customers.

7374

Lean Management - Empowering Diverse Values

7576

2023 Environmental, Social, and Governance (ESG) Report

Industrial Chain Management

A new wave of technological revolution has triggered countries to strengthen the control of critical mineral supply chains. Theimplementation of the EU Con?ict Minerals Regulation, Battery Regulation , EU Human Rights and Environmental Due Diligence,and the London Metal Exchange (LME) Policy on Responsible Sourcing of LME-Listed Brands have led to a series of changes inglobal mineral supply chain rules.To enhance the capability of due diligence management of the mineral supply chain and respond to market and customerexpectations for supply chain compliance and responsible sourcing, the company has established a supply chain due diligencemanagement working group. This group coordinates the management of relevant departments and subsidiaries. In accordancewith the "OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Con?ict-A?ected and High-Risk Areas"and "Chinese Due Diligence Guidelines for Mineral Supply Chains" and other relevant standards, the Company has compiledsupply chain due diligence management system documents. It continuously strengthens the implementation of supply chaindue diligence management, formulates the "six-step method" for due diligence management process, and advocates forcompliance, sustainability, and responsibility in supply chain management principles.

Supply Chain Due Diligence

"Six-Step" Supply Chain Due Diligence Management System Process

Identify and Assess Risk: Utilizationof CAHRAs identification tool; Redflag review;risk assessment andrating.

Due Diligence ManagementReport: Release of the annualreport on supply chain duediligence management.

Establish Due Diligence ManagementSystem: Supply chain due diligencemanagement policy; managementstructure; supply chain control andtransparency system; supply chain duediligence management training foremployees and suppliers

Internal and External Assessment: Internalevaluation - due diligence managementand performance management; externalevaluation - third-party evaluation.Risk Management: Reporting tomanagement, developing risk mitigationplans, and implementing and monitoringrisk management plans.

Remedial Mitigation Measures: Whenthe company recognize that it hascaused or contributed to actualadverse impacts, they should mitigatethese impacts by providing for orcooperating in remediation whenappropriate.

0304

"Six-Step"

The Company actively communicates and cooperates with suppliers to convey OECD Due Diligence Guidance for ResponsibleSupply Chains of Minerals from Con?ict-A?ected and High-Risk Areas the Company's supply chain due diligence managementpolicy, supplier code of conduct, etc. Through *KYC supplier questionnaires, visits, emails, and other methods, the companyassesses the actual business conditions of suppliers, including the compliance, stability, and business ethics.

*KYC (Know Your Customer) questionnaire assists in understanding suppliers and conducting compliance and due diligencequestionnaires on suppliers. On this basis, an e?ective risk prevention system is established to help predict and avoid risks in time andmaintain the e?cient operation of the supply chain.

Supply Chain Due Diligence Management Policy Requirements

When sourcing or operating in "con?ict-a?ected and high-risk areas", suppliers commit that they will nottolerate any form of torture, forced labor, child labor, other serious human rights violations and abuses, warcrimes, or other serious violations of international humanitarian law.

Serious Violations Related to Mineral Exploitation, Transport, or Trade

The Supplier undertakes that it will not tolerate any direct or indirect support to non-State armed groupsthrough mineral extraction, transport, trade, handling, or export.

On Direct or Indirect Support to Non-State Armed Groups

The supplier commits to refrain from providing direct or indirect support to public or private security forcesthat illegally tax or extort middlemen, exporters, or international traders.On Public or Private Security Forces

The Supplier pledges to support or undertake measures to contribute e?ectively to the elimination of moneylaundering.

On Money Laundering

In March 2023, the Company conducted thematic sharing and moduletraining on supply chain due diligence management. The trainingfocusing on "The Top Ten Trends and Challenges of InternationalMineral Supply Chain Due Diligence Management", the "ResponsibleSourcing Policy" of the London Metal Exchange, and the "Chinese DueDiligence Guidelines for Responsible Mineral Supply Chains" of ChinaChamber of Commerce of Metals, Minerals & Chemicals Importers &Exporters. Through this training, the participating employees deepenedtheir understanding of the requirements of supply chain due diligencemanagement and the excellent practical within the industry. They gainedgreater awareness of the importance of supply chain due diligencemanagement, thereby improving the company's risk identi?cation, riskassessment, and risk control.

Case

Specialized Training on Supply Chain Due Diligence Management to Enhance Risk HandlingCapabilities

Special training on supply chain due diligence

management

Lean Management - Empowering Diverse Values

7778

2023 Environmental, Social, and Governance (ESG) Report

From April to July 2023, the company delegated 14 employees to undergo training for internal auditors in responsiblemineral supply chain management. The curriculum encompassed international mineral supply chain regulations,concepts of responsible management, ESG risks and responses, management processes, and hands-on drills, amongothers. Following three days of concentrated training, the participants thoroughly grasped the methodologies forconstructing and operating the responsible management system of the mineral supply chain. They successfullypassed the internal auditor's assessment and obtained the corporate internal auditor training certification. Thisfacilitated the company's precise interpretation and application of the "Guidelines for Responsible Mineral SupplyChain Management in China" and its assessment tools, solidifying a robust foundation for the subsequent internalself-assessment of responsible supply chain management within the enterprise.

CaseThe Company Supports Employees to Participate in Enterprise Internal Assessor Trainingto Strengthen the Internal Evaluation System

Internal assessor training for mineral supply chain

responsible management enterprise

Internal assessor certi?cate

The Company manages the development, registration, evaluation, and exit stages of suppliers in accordance withsupplier management measures such as the Procurement Management Measures, Supplier Management Measures,Electronic Procurement Platform Management Measures, and Procurement Evaluation Expert ManagementMeasures. The Company manages the entire lifecycle of suppliers through the Yunnan Tin electronic procurementplatform. It publishes Yunnan Tin procurement projects through the procurement platform, centrally displayselectronic information, and conducts annual evaluations of registered suppliers.

Supplier Management

In accordance with the Management Measures for External Procurement of Metal Raw Materials of Yunnan Tin Co., Ltd.(Trial) and other management measures, the harmful elements in the concentrate raw materials to be purchased shouldmeet the relevant requirements of "The speci?cation for limit on harmful element content of the heavy metal concentratesproducts" (GB/T 20424-2006).Suppliers should be aware of and voluntarily accept the Company's supply chain policy - the Supply Chain Due DiligenceManagement Policy of Yunnan Tin Co., Ltd. The Company adheres to the Responsible Sourcing Manual of Yunnan Tin Co.,Ltd. and other relevant provisions. It completes the collection and preliminary review of necessary information such as riskidenti?cation of supply chain due diligence management, supplier management, procurement in con?ict-a?ected andhigh-risk areas. It conducts compliance reviews and procurement recommendations in accordance with the Company'ssupply chain due diligence management mechanism before proceeding with raw material procurement negotiations.

Supplier Selection

During the reporting period, the company continuallystrengthened its promotion and training on supply chainmanagement norms during supplier visits. Throughseminars and case studies, the company demonstrated tosuppliers the specific steps for implementing effective riskassessments and due diligence measures. This initiativeenhanced supply chain transparency and improved thedue diligence management level across all participatinglinks. It aided suppliers in understanding the requirementsfor supply chain risk management, business ethics, anti-corruption, and other compliance standards, activelypromoting continuous improvement of the supply chainand collectively dedicating e?orts to achieve a responsibletin industry chain.

CaseSupplier Due Diligence Management Training to Enhance Responsible Sourcing Awareness

Supplier visit and training

The supplier management unit conducts annual evaluations of registered suppliers. It evaluates and reviews thesupplier's quali?cations, operational status, credit rating, raw material quality, safety, human rights, compliance with localcommunity relations, business ethics, environmental, and social impact, among others.In accordance with the principle ofoptimization, the Company selects excellent and quali?ed suppliers, eliminates unquali?ed suppliers, establishes a high-quality supplier database, and provides a reliable service guarantee for the Company's production and operation.

The Company has established a procurement management system based on "company decision-making, unifiedmanagement, and tiered responsibility". It implements procurement management in accordance with the principle ofseparation of decision-making, management, implementation, and supervision. Relying on its controlling shareholders,it continuously strengthens the construction of "one platform" and "one mall". It uni?es supplier management, separatesthe three rights at the base level, and establishes a procurement risk prevention and control system. It intensifiesprocurement sourcing, optimizes the business environment, and requires registered suppliers to sign the "Complianceand Integrity Self-discipline Commitment", thereby continuously promoting sunshine procurement.

Based on actual needs, the Company periodically organizes relevant training for suppliers, such as training on thecompany's system, business ethics, anti-corruption, procurement system operation, etc.

Supplier Evaluation

Sunshine Procurement

Supplier Training

During the reporting period, the signing rate of the Supplier Code of Conduct reached ashigh as100%.

2023

Key Performance

Lean Management - Empowering Diverse Values

7980

2023 Environmental, Social, and Governance (ESG) Report

Guided by the principle of "providing first-class service quality for customers," the Company offers flexible salesmethods for tin ingots to meet the diverse needs of customers. Tin ingots can be sold in bundles (tons) or individually(ingots), providing supply chain support services for customers of self-produced tin ingots. In 2023, the Companyconducted a customer satisfaction survey on Sn99.90A, Sn99.90AA, Sn99.95AA, and Sn99.99A tin ingot products. Theoverall satisfaction rate was 99.21%, an increase of 1.32% compared to 2022.In terms of customer complaints, to improve the level of after-sales service, respond promptly to customer feedback,and enhance customer satisfaction, the Company has formulated the "Customer Complaints Handling Procedureof Yunnan Tin Co., Ltd. (Trial)". This procedure addresses general complaints, important complaints, and majorcomplaints respectively. The sales units, production units, and market operation center are responsible for handlingtheir respective complaints and coordinating with the relevant person in charge to resolve complaints.

Customer Service

Excellent Supply Chain Partner -Outstanding Contribution Award by

China Baowu Group

Honorary certi?cate issued by China Baowu Group

Technological Innovation

The Company deploys the innovation chain around the industrial chain, steadfastly implements the innovation-driven development strategy, and vigorously promotes technological innovation. It enhances the company'sinnovation capabilities by continuously strengthening investment in scienti?c research, gradually increasing e?ortsto attract talent, expanding cooperation in opening up to the outside world, accelerating the transformation ofscienti?c and technological achievements, and focusing on breakthroughs in key core technologies.

Technological Innovation ManagementFunctional structure of scienti?c and technological work managementThe Company continually re?nes the functional positioning of decision-making, management, and executionlevels to enhance the macro-management and overall coordination of technological innovation work.By improving the technological management institutions at the grassroots units, the Company achievesfull coverage of technological management functions and forms a management model of hierarchicalmanagement and complementary advantages.

Strengthening Top-Level Design and Improving the Innovation System

The Company revises the reward system, improves the evaluation criteria of technological innovation,and other technological innovation work systems. It continually strengthens system guidance and positiveincentives to provide institutional guarantees for the construction of the innovation system.Improving the Incentive Mechanism and Management System

With technology as the link and projects as the carrier, the Company continually improves the allocation oftechnological resources, forms a strong synergy, and builds an innovative system that integrates technologicalresearch and development, transformation of achievements, personnel training, and open cooperation.Accelerating Innovation Drive and Creating an Innovation Engine

Standards and patents are regarded as important contents and indicators of technological innovation,which run through all aspects of technology reserve, project research and development, achievementtransformation, and application promotion.Strengthening the Layout of Standard Patents and Enhancing the Ability of Independent Innovation

Safety and EnvironmentalProtection DepartmentTechnical review of safety andenvironmental protectionfor the establishment andimplementation of scienti?c

Human Resources Department

Organizes and formulates thetraining and introduction ofscienti?c and technological

Financial Management

DepartmentRaising and management offunds for science and technology

Science and TechnologyInvestment DepartmentComprehensive managementof scienti?c and technologicalprogress and innovation

Mine Management Center

Management of scienti?c andtechnological projects of theCompany and its subordinate

enterprises (mining sector)

Audit and Risk Control

DepartmentAudit of the use of funds forscience and technology projectsand internal control

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2023 Environmental, Social, and Governance (ESG) Report

The Company places great emphasis on the protection and management of intellectual property rights. It hasestablished norms for managing intellectual property work and integrates intellectual property work throughoutthe entire process of technological innovation. The Company consistently monitors the progress of science andtechnology, stays informed about relevant patent technology trends both domestically and internationally, promptlyadjusts its research direction, and takes timely protective measures for intellectual labor achievements.

●?

If the imported technologyand equipment containpatents, the Companyveri?es and monitorsthe legal status of thepatents in the exportingcountry and China in realtime and reports to thecompetent authorities forexamination and ?ling.

●?

Before exportingtechnology, products,and equipment toforeign countries, theCompany analyzes thelegal status of intellectualproperty rights, clari?esthe patent legal status ofthe product in the placeof sale and export, andavoids infringing on otherpeople's patents

●?

In joint venture andcooperative productionand operation activitiesusing technologydeveloped domesticallyand internationally, thetechnology provider mustsubmit the "China PatentLaw Analysis Report".

●?

When signing a tradecontract related topatents, the contractshould specifythat the partnershould provide legalcerti?cation documents,correspondinglegal liabilities, andcompensation for losses.

●?

The Company fully utilizesintellectual propertyinformation, applies therules of the intellectualproperty system, andproposes proactivecountermeasures.

●?

The Company reviewsrelevant literatureand patent literatureboth domestically andinternationally. It analyzesand studies to enhance theaccuracy of the project'sresearch and developmentdirection, optimizes thetechnical scheme andresearch route, improvesresearch and developmente?ciency, reducesresearch and developmentcosts, and avoids low-levelrepetition or infringement.

Intellectual Property Management

In 2023, the Company actively disseminated and implemented the Patent Law, Trademark Law, Copyright Law, EnterpriseIntellectual Property Management Standards, and other laws, regulations, and basic knowledge. It conducted intellectualproperty publicity through the Company's intranet, trade union network, Yunnan Tin Youth WeChat platform, and otheremerging media to improve employee participation and stimulate employee innovation enthusiasm.

CaseEmployee Intellectual Property Training

Scienti?c Research Project

Preparation

Early Stage of Scienti?cResearch Project

Interim Stage of Scienti?cResearch Project

After the Occurrence ofPatent Infringement

The Company has been deeply involved in the tin industry for 141 years. It boasts a group of leading talents in the mining,selection, smelting, and deep processing industries. Utilizing advanced and efficient mining equipment, the Company hasdeveloped a large number of mineral processing equipment and core technologies with independent intellectual propertyrights. Considering the Company's diverse types of minerals and their complex properties, the Company has successfullyapplied single or combined processes such as "flotation, magnetism, gravity" to separate ores based on different mineralcharacteristics, e?ectively improving the metal recovery rate.Furthermore, the Company has developed technologies such as pre-smelting treatment, oxygen-enriched top-blown reductionsmelting, fire-wet joint refining, slag fuming treatment and waste heat recovery, and Cansolv low concentration SO2 fluegas acid production. It has adopted process equipment primarily consisting of boiling furnaces, top-blown furnaces, electriccontinuous crystallization machines, and vacuum furnaces. The Company's equipment performance is excellent, productenergy consumption is low, smelting level and safety factor are high, and the overall technology is at the world-leading level.March 2023, the Company was successfully selected by the State-owned Assets Supervision and Administration Commissionof the State Council to establish a world-class professional leading demonstration enterprise. It won three Yunnan Science andTechnology Progress Awards, two ?rst prizes of China Nonferrous Metals Industry Science and Technology Award, and received54 patent authorizations.

Technological Innovation Achievements

Major Innovation Achievements in 2023

Special Prize of Yunnan Science and Technology

Progress Award

Yunnan Science and Technology Progress Award

First Prize of China Nonferrous Metals IndustryScience and Technology Award

First Prize of China Nonferrous Metals Industry

Science and Technology Award

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2023 Environmental, Social, and Governance (ESG) Report

Quality Management

Quality is the cornerstone of the Company's operations and development. The Company adheres to the quality managementphilosophy of pursuing excellence, always striving to reward customers with superior product quality and excellent service.In 2023, in accordance with a series of national laws, regulations, and norms such as the "Outline for Building a Strong QualityCountry," and considering the actual operation of the Company's quality management, the Company optimized and integrated?ve management methods, including the "Quality Management System," at the level of Yunnan Tin. It rede?ned the Scienceand Technology Investment Department as the primary management department for quality, measurement, standardization,and leading organization system certification. At the same time, the Company clarified the management responsibilitiesof other relevant departments and made principled provisions on product service, measurement management, productidenti?cation management, quality accidents, and laboratory work to ensure that product quality meets customer needs.

The Company comprehensively inspects and monitors the quality of raw materials, the production process, and eachproduct process. From the four dimensions of "Plan-Do-Check-Act", the risk points in the implementation process aresystematically identi?ed. The management process is systematically sorted out using ?owcharts, and a scienti?c andreasonable management system and operation mechanism are established to ensure that the quality of productsand services meets user needs.

Full Process Product Quality

Hualian Zinc Indium Company effectively integrates the production process and quality control to form a "3I"(Industrialization + Informatization + Intelligence) quality management operational mode. The mining processrealizes intelligent scheduling management of digital open-pit mines; the beneficiation process realizes theautomatic analysis and adjustment of production process-related parameters to ensure the stability of the process?ow and product quality standards; the terminal forms a large data analysis database, and the subsystems operate incoordination with each other to e?ectively integrate the production process and quality control. The ?rst acceptancerate of the whole process is 100%, and the inspection rate of raw materials and products is 100%.

Mining units of the Company have established data monitoring for productsampling, measurement, moisture, main grade, and impurities for the quality of keymineral products from the aspects of mineral processing production and productwarehousing. They have set up a daily supervision mechanism for product grade anda product delivery ledger to ensure the quali?ed rate of products leaving the factory.The Company carries out quality control of KPI performance indicators throughout theentire process for the incoming inspection of raw and auxiliary materials, the productionprocess and its output quality, product quality inspection, and service process.

In September 2023, during the quality month activities, the Company actively organized a series of qualitymanagement activities, such as job skills and technical operation competition, total quality management knowledgesharing, quality laws and regulations, QC group activities, quality team building knowledge, production technology,lean management, 6S management, case analysis of quality management results, and quality managementexperience exchange. During the reporting period, the Company conducted a total of 146 quality knowledge trainingsessions, exchanges, and skills competitions, with 6,579 participants, effectively improving staff skills and qualitymanagement awareness.

Case"3I" Quality Management Operational Mode to Improve Product Quality

CaseQuality Management Training to Improve Employees' Quality Awareness

Team quality knowledge and job skills training in 2023Quality development policy publicity and implementation of

Yunnan Administration for Market Regulation

SmeltingProducts

MineralProducts

In 2023, 66 batches of products were actually sampled and inspected, of which 7 batcheswere supervised and sampled by the state, and the pass rate was100%.

During the reporting period, the internal control compliance rate of major smelting productswas

99.77% (planned ≥ 96.50%).

The pass rate of quality indicators for the nonferrous metal smelting unit process was

95.24% (planned ≥ 91%).

The pass rate of internal testing was

97.81% (planned ≥ 95%).

The pass rate of external testing was

97.92% (planned ≥ 94%).

The pass rate of sample processing and testing was

97.71% (planned ≥ 95%).

The weekly inspection rate of measuring instruments was

99.89% (planned ≥ 96%).

2023

Key Performance

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2023 Environmental, Social, and Governance (ESG) Report

To enhance the e?ciency of product quality analysis and testing and promote digital management to improve analysis quality,various production units of the Company have successively purchased and deployed detection and analysis instruments suchas plasma emission spectrometers, X-ray ?uorescence spectrometers, and high-frequency infrared carbon-sulfur analyzers.The Agilent Inductively Coupled Plasma Optical Emission Spectrometer, purchased by Datun Tin Mine, has the capabilityto detect multiple elements simultaneously, with high speed, low detection limit, and high accuracy. The Dispersive X-RayFluorescence Spectrometer EDX-LE Plus, purchased by Kafang Branch for the laboratory of the Technical ManagementCenter, has a fast analysis speed and a wide range, and does not produce substances harmful to the environment. The = High-Frequency Infrared Carbon-Sulfur Analyzer can effectively address the impact of physical and chemical adsorption on lowsulfur. It can determine a sample in one minute, improving e?ciency while avoiding the physical harm to testing personnel fromdangerous chemical reagents.

CaseOptimizing Detection and Analysis Instruments to Improve Product Quality Analysis and Testing E?ciency

High-Frequency Infrared Carbon-

Sulfur Analyzer

Inductively Coupled Plasma OpticalEmission Spectrometer

Dispersive X-Ray FluorescenceSpectrometer EDX-LE Plus

CNAS LaboratoryAccreditation Certi?cate ofDatun Tin Mine

During the reporting period, 12 groups were awardedExcellent QC Groups of Yunnan Province and NonferrousMetals Industry.2 QC teams won the gold medal at the 48th InternationalConvention on Quality Control Circles (ICQCC).The QC achievement project "Improving the Capacity of a 30m Rotary Kiln to ProcessHigh Impurity Smoke and Dust" won the National Excellent QC Group.The loading team of the Copper Branch was awarded the "Fifth Yunnan ProvincialPeople's Government Quality Award Nomination Award".

2023

Key Performance

The Company promotes the application and e?cient operation of system security. It has established the NetworkSecurity and Informatization Leadership Group of Yunnan Tin Co., Ltd., which coordinates the management ofinformatization projects, network security, and information systems. The Company has formulated regulations suchas the "Network Center Computer Room Management Measures" and the "Company Digital Management Measures"to clarify the responsibilities of computer room staff. This strengthens the management of equipment, systemsecurity, and data security, such as hierarchical and classi?ed management of the unit's data assets, and di?erentsecurity protection strategies for di?erent levels of data.To comprehensively improve the Company's information network security, the Company regularly conducts networksecurity training for relevant sta? to enhance their awareness of network security prevention. To e?ciently managethe Company's information network, the Company promotes digital construction from various aspects and carriesout digital upgrades for six software systems. These include the industrial Internet operating system, industrial safetyand environmental protection management and control system, equipment asset management system, productionand manufacturing management and control system, industrial cloud platform, and quality traceability managementsystem. All of these have obtained computer software copyright registration certi?cates.During the reporting period, the Company did not receive any complaints about infringement of customer privacyand loss of customer information.

Data Security Management

CNAS LaboratoryAccreditation Certi?cateof Hualian Zinc Indium

Quality ManagementSystem Certi?cate ofYunnan Tin

Quality System Certi?cateof Hualian Zinc Indium

Quality ManagementSystem Certi?cate ofWenshan Zinc Indium

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2023 Environmental, Social, and Governance (ESG) Report

Industry CooperationThe Company values cooperation with various parties, e?ectively linking industry resources, and actively carries outindustry-university-research cooperation and talent exchange activities. This promotes industrial integration andhigh-quality development of the tin industry, and fully leverages the Company's leading role in the tin industry.

The Company actively organizes and participates in the formulation and revision of standards related to product quality,analytical methods, and basic professional management for tin, copper, zinc, and indium. In 2023, the Company led andparticipated in the revision of one national standard, two industry standards, and four group standards.

Formulation of Industry Standards

Methods for chemical analysis of zincconcentrates—Part 25:Determination of indiumcontent—Flame atomic absorption spectrometry

National StandardGB/T8151.25-2023

May 23, 2023

August 26, 2023

April 21, 2023

December 01, 2023

July 26, 2023

Industry StandardYS/T 1606-2023Industry StandardYS/T 745.11-2023Group StandardT/CNIA 0211-2023Group StandardT/CNIA0147-2023Group Standard, China Non-FerrousMetals Industry Association Science andTechnology [2023] No. 14: 2023-004-T/CNIAGroup Standard, China Non-FerrousMetals Industry Association Science andTechnology [2023] No. 14: 2023-007-T/CNIA

Determination of indium content in indium richmaterials inductively coupled plasma atomicemission spectrometryMethods for chemical analysis of copper anodeslime—Part 11:Determination of indiumcontent—Flame atomic absorption spectrometry

Methods for chemical analysis of zinc stannate-Part 1: Determination of tin content-Potassiumiodate titrationMethods for chemical analysis of zinc stannate—Part 2: Determination of zinc content—Na2EDTAtitration method

Technical speci?cation for green-design productassessment of indium ingots

Iron oxide by product in zinc hydrometallurgy

Standard Name

Standard Number/Plan

Number

Publication Date

The Company continuously strengthens exchanges and cooperation with authoritative scientific research institutionsand universities, and jointly carries out research on world-class enterprise innovation projects to solve various technicalproblems related to key science and technology. In cooperation with Kunming University of Science and Technology, theCompany has completed the project declaration of Yunnan Province's major scienti?c and technological project "Researchand Development and Application Demonstration of Key Technologies in the Whole Industry Chain of Tin, Indium, andArsenic (Phase I 2023)". This project involves research on the e?cient use of complex tin-containing polymetallic mineralresources, realizing deep cooperation with complementary advantages.

Industry Communication

In November 2023, the Company participated in the 2023 Asian TinWeek sponsored by the International Tin Association (ITA). In hisspeech, Han Shouli, Vice Chairman and General Manager of YunnanTin Group (Holding) Co, Ltd., pointed out that in the current contextof profound and complex changes in the international and domesticenvironment, the tin industry also faces new challenges. Thesechallenges require concerted efforts from all parties to maintain thehealthy and sustainable development of the industry.During the CEO dialogue segment, the Company's representative,Chen Xiongjun, discussed and spoke on hot topics such as thehighlights of future demand growth in the tin industry, technologicalbreakthroughs in Yunnan Tin, and industry trends. Furthermore, ZhangZheyu, an analyst from the Company, delivered a keynote speechtitled "Prospects for the Development of China's Tin Market" to furtherenhance the Company's international influence and promote thehealthy and sustainable development of the international tin industry.

CaseParticipation in the International Tin Association's Asian Tin Week

Han Shouli, General Manager of Yunnan TinGroup (Holding) Co, Ltd., delivering the opening

speech at the conference

Representatives of the Company participating in the round-table discussion.

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2023 Environmental, Social, and Governance (ESG) Report

In April 2023, the Company participated in the Responsible Critical Minerals Supply Chain Roundtable held at theheadquarters in Germany. The Company introduced its own supply chain due diligence management system'sconstruction and implementation, as well as its achievements in the development of green mines. It proposedfurther promotion of the "Chinese Due Diligence Guidelines for Responsible Mineral Supply Chains" and mutualrecognition with foreign standards. It emphasized that supply chain due diligence management is a process ofcontinuous improvement and called for strengthening the participation of upstream and downstream enterprises inthe supply chain to gradually promote standardized governance, thereby achieving sustainable development of thesupply chain.

CaseParticipation in the Responsible Critical Minerals Supply Chain Round-table Conference

Responsible Mineral Supply Chain Round-table Conference

To demonstrate the company’s commitment to ESG and enhance its image in supply chain due diligencemanagement to the international community, the Yunnan Tin delegation participated in the 2023 InternationalForum on Sustainable Mineral Supply Chains. As the largest domestic event focusing on the mining industry's ESGand mineral supply chain due diligence, the conference theme was "Strengthening Mining Governance, BuildingSupply Chain Partnerships, and Driving New Energy Transition." It provided an in-depth analysis and discussion ofprevalent and challenging issues in mining and mineral supply chain management.During the forum, the company engaged in keynote speeches and thorough discussions with NGOs, industry experts,and senior executives of leading companies on environmental protection and human rights issues within mineralsupply chain management. They explored strategies to address ESG risks and challenges at the source mines, sharedlearning experiences, and further advanced industry development.

CaseParticipation in the International Forum on Sustainable Mineral Supply Chains

The Deputy Secretary of the Company's Party Committee delivering a keynote speech on "Digital Empowerment to

Promote and Standardize Green Mine Construction"

In September 2023, Liu Luke, the Party Secretary, Chairman, and General Manager of the Company, led a team toattend the Tin Industry Chain Summit. He delivered an opening speech, highlighting that the tin industry is facingchallenges such as unstable raw material supply and excess smelting capacity. He emphasized that the industryshould seize opportunities to continuously broaden the application scenarios and ?elds of tin metal. The Companyis committed to bearing the responsibility of "the nation's great", and seeks common development with colleaguesin the tin industry. Furthermore, during the round-table price forum, Chen Xiongjun, the Deputy General Managerof the Company, discussed and spoke on issues such as the current situation of domestic tin ore supply, changes indownstream demand, and future development trends of the industry. This was done to further promote the high-quality development of the domestic tin industry.

CaseThe 13th China Tin Industry Chain Summit Echoes the Leading Voice of the Tin Industry

Opening speech by Liu Luke, Chairman of the Company

Caring for EmployeesandFul?lling MissionResponsibilities

Responsive SDGs

Employees are the foundation of a company and a crucial drivingforce behind its success. Yunnan Tin deeply implements the talentempowerment strategy in the new era. The Company is committedto attracting and retaining a diverse range of professional talents. Itcontinually enhances the employee welfare system and implementsmeasures to care for employees. The Company always regardsthe protection of employees' rights as a key aspect of corporatemanagement. It pays high attention to employee health and safety,while also considering its social responsibility in the ?eld of publicwelfare and charity. All these efforts contribute to the high-qualitydevelopment of the Company.

9192

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2023 Environmental, Social, and Governance (ESG) Report

Talent Acquisition and Development

The Company has always placed a high emphasis on talent work. It has formulated the "Open RecruitmentManagement Measures for Human Resources" and continuously revised and improved the Company's recruitmentsystem. It is clearly stipulated that discriminatory conditions such as ethnicity, race, gender, and religious beliefsmust not be set during the recruitment process. The use of child labor is strictly prohibited, and all forms of forcedlabor are resisted, providing equal employment opportunities for all employees.

Guided by Xi Jinping's socialist ideology with Chinese characteristics in the new era, the Company deeply studiesand implements the spirit of the 20th National Congress of the Communist Party of China and the importantthoughts of General Secretary Xi Jinping on doing a good job in talent work in the new era. The Company is closelycentered on the goal of creating a world-class professional leading demonstration enterprise, focusing on the keytasks of the Company's reform and development, and focusing on talent capacity building. The Company adheresto the integrated development of "introduction, cultivation, and utilization", sincerely attracting talents, diligentlycultivating talents, and carefully utilizing talents.

Talent Philosophy

Positive circulation strengthening the talent ecosystem

Key performance

Bachelor Degree or Above

2,600?18.77%Junior College3,491?25.21%Technical SecondarySchool and Below

7,759?56.02%

Male10,920?78.84%Female2,930?21.16%By Gender

Talents Striving to Be the First

Enterprise BuildingPlatforms

OrganizationsConstructing Channels

By AcademicQualifications

During the reporting period, the Company had 1,197 professional and technical personnel withintermediate or above professional titles, and418 professional and technical personnel with technicianor above professional skills.Among the registered employees, there were7 instances of national talentaward recognition,141 instances of provincial and ministerial talent recognition, and 62 instances

of prefectural talent recognition.Speci?cally, there were4 individuals who received a special allowancefrom the State Council,6 individuals who received a special allowance from the provincial government, 1individual recognized as a leading ?gure in science and technology,2 individuals recognized as nationaltechnical experts, and8 individuals recognized as Yunling Chief Technicians.

51 Years and Above2,449?17.68%41 to 50 Years

4,095?29.57%

31 to 40 Years5,737?41.42%

30 Years and Below1,569?11.33%

By Age

To ensure the successful realization of the Company's "14th Five-Year Plan" talent development goals and to enhancethe comprehensive quality and professional skills of the sta?, the Company has issued and implemented the "Cadreand Talent Exchange and Training Work Program". The Company has also formulated the "2023 Annual Sta? TrainingPlan", which provides layered and categorized systematic training for talents, precisely customizes differentiatedtalent training, and promotes the construction of a talent echelon.

Talent Development

Employing 4,930 ethnic minorities employees, accounting for 35.6% of the companyEmploying652 Veterans, accounting for 4.71% of the company

2023

Key Performance

Caring for Employees and Ful?lling Mission Responsibilities

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2023 Environmental, Social, and Governance (ESG) Report

●?

Complete the cadre and talentteam database constructionand entry

●?

Intensify the exchange andtraining of cadres

●?

Strengthen the constructionof the young cadre team

●?

Complete the recruitment taskof the National RecruitmentAction

●?

Compile an annual recruitmentplan

●?

Increase the introduction ofurgently needed professionaltalents

●?

Improve and refine the "TenCore Backbone" trainingproject

●?

Complete the post-trainingskills competition

Measures for talent team trainingStrengthen the constructionof cadre and talent echelon

Increase the intensity of talent

introduction

Promote the constructionof a comprehensive, three-dimensional training system

The Company places a high emphasis on talent training programs. In September 2023, to holistically enhance thecomprehensive quality and business capabilities of human resources practitioners, the Company conducted aspecialized training course for the Human Resources Department titled "Learning from Huawei: Talent Managementand Compensation Management - Concepts and Practices". This course explored the practical experience ofHuawei's talent training and compensation performance management. A total of 27 individuals participated in thetraining, laying a solid talent foundation for the Company's development.In September 2023, Datun Tin Mine organized a training course for excellent managers for the year 2023. The trainingwas attended by a total of 49 individuals. Managers underwent in-depth training in three dimensions: goal setting,performance management, and problem-oriented thinking and analysis methods. This served to further enhance theprofessional competence and leadership abilities of the managers.

CaseConducting Training for Excellent Management Personnel to Strengthen the Capacity Building of Relevant Sta?

Special training on human resource

management

Training for excellent management personnel

In May 2023, to enhance the ability of internal trainers in planning, developing, organizing, and implementinginternal training, and to further improve the training skills of the internal trainer team, the Company conductedinternal trainer training at Datun Tin Mine. The training was attended by a total of 38 individuals and lasted for 10days. This successfully cultivated an innovative team of internal trainers to better serve the long-term sustainabledevelopment of the Company.

CaseOrganizing Internal Trainer Training to Elevate the Team's Training Level

Skill enhancement for internal trainers in the Company

During the reporting period, the average duration of training received by theCompany's employees was

58.42 hours.

The "Ten Core Backbones" training program of Tin Co., Ltd. trained6,653 employees.

2023

Key Performance

Caring for Employees and Ful?lling Mission Responsibilities

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2023 Environmental, Social, and Governance (ESG) Report

The Company adopts a "market-oriented mechanism construction" approach, striving to optimize the constructionof a market-oriented performance pay management system. The Company continuously improves the assessmentand incentive system, adheres to strategic guidance and target traction, and comprehensively reforms the talentdevelopment system in combination with the contributions of various units in the industrial chain and value chain.

●?

The Company has strictly implemented the total wage assessment method. This includes monthly strict management,real-time tracking and adjustment of abnormal indicators, and continuous strengthening of performance appraisal.

●?

The Company has effectively implemented performance-oriented salary setting by classification, ensuring the inclinationof salary and salary growth rate of major production positions such as mining front line and key value creators.

●?

The Company has issued and implemented the "Measures for the Management of Total Wages" and the"Measures for the Performance Appraisal and Salary Management of Middle-level Managers".

●?

The Company has signed a personalized annual business performance responsibility letter with eacha?liated unit to match the business performance assessment objectives and targets.

●?

The Company has issued and implemented the "Measures for the Management of Sta? Rank (Level) and SalaryGrade at the Headquarters (Trial)" and the "Measures for the Management of Salary at the Headquarters (Trial)".

●?

A rank (level) promotion mechanism has been established, with personal annual performance as the core andpersonal education, professional title, professional (practicing) quali?cation promotion, and honor as otherelements.

Performance Pay

Market-oriented performance pay management system

Building a Dual-channel Development System

optimizing the Salary Distribution Mechanism

Strengthening the Process Management of Total Wages

Employee Compensation and Bene?tsThe Company values the collective sense of belonging among employees. To build a cohesive enterprise, theCompany strictly implements the salary, benefits, and other welfare provisions that employees are entitled toenjoy as per the relevant state regulations. The Company provides all-round care for its employees, coveringwelfare aspects such as caring for employees in di?culty and female employees, expressing condolences to retiredemployees, and organizing cultural activities.

Assessment and incentive system

Establish a competitive salarydistribution system for keycore talents

Continuously promote thetenure system and contractualmanagement of managers insubordinate enterprises

Select di?erent key coreindicators and adjust theassessment weight reasonably.

The Company places great emphasis on the humanistic care of its employees, continuously enhancing the employeewelfare system, and striving to boost the sense of happiness and belonging among its employees. The Company providesall employees with "?ve insurances and two funds", and additionally o?ers employees bene?ts such as supplementaryinsurance for serious illnesses and mutual medical assistance. These measures aim to alleviate the financial burdencaused by illness. The Company also conducts a series of activities to integrate employee care into its corporate culture.

Employee Welfare and Care

Five Insurances and Two Funds

Five Insurances and Two FundsMedicalInsurance

Unemployment

Insurance

MaternityInsurance

Work Injury

Insurance

HousingProvident

Fund

Corporate

AnnuityPensionInsurance

In June 2023, to provide the children of employees with a unique "June 1st" International Children's Day experience,the Company's union organized a parent-child care activity titled "Entering the Workplace of Parents".By guidingchildren to visit their parents' workplaces, they could appreciate the importance and challenges of their parents'roles, understand their hard work, and thereby foster stronger emotional bonds between parents and children,reduce the distance between them, and cultivate a sense of gratitude in the children.

CaseConducting "June 1st" Parent-Child Activities to Deepen Emotional Connections within Employees' Families

"June 1st" Children's Day Parent-Child Care Activities

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2023 Environmental, Social, and Governance (ESG) Report

In June 2023, the Datun Tin Mine Labor Union carried out an activity titled "Labor Union Warmth Enters Thousandsof Homes", delivering cooling refreshments to the production frontline. The union distributed summer comfort itemsto 790 frontline employees. This gesture not only provided the employees with a respite from the summer heat butalso stimulated their work enthusiasm and strengthened team cohesion and centripetal force.

CaseOrganizing Summer Cooling Activities to Enhance Care for Frontline Employees

To further extend care to employees, the leaders of the Company visited employees in difficulty, retired veterancadres, and disabled workers during the Spring Festival and National Day. They disseminated the Company'sassistance policies to them and distributed consolation items such as rice and cooking oil. In the future, the laborunion will continue to devote e?orts to assist employees in di?culty and vulnerable groups, striving to enhance theirsense of achievement, happiness, and belonging.

CaseConducting Double Festival Care and Support Activities for Special Employee Groups

Liu Luke, Chairman of the Company, consoling

employees in di?culty

Wang Jianwei, Deputy General Manager, consoling

employees in di?culty

Zhang Yang, Deputy Secretary of the Party Committee,

consoling employees in di?culty

Chen Xiongjun, Deputy General Manager, consoling

employees in di?culty

"Labor Union Warmth Enters Thousands of Homes" cooling activities

The Company is committed to enhancing the protection of employees' rights. The Company continually refines thegrievance mechanism for labor rights and interests, consistently focusing on the mental health of employees. It placeshigh importance on human rights issues such as anti-coercion and anti-discrimination, intensifying the promotion oftopics related to human rights, and fostering a correct understanding of human rights among its employees.

Employee Rights and Interests

The Company actively organizes various activities aimed at improving the physical and mental health of its employees.In November 2023, the Company invited Professor Yu Fang, the chief expert of the Yunnan Mental Health Service Project,to conduct a special lecture titled "Listening to Emotions and Releasing Pressure" and group psychological counseling atthe Company's headquarters. Over 50 employees from the Company's headquarters attended the lecture. This lectureand psychological counseling played a positive role in helping employees alleviate work pressure, enhance mental healthlevels, and strengthen team cohesion. It allowed employees to gain a more intuitive understanding of the importance ofmental health and learn to apply psychological knowledge to adjust their mindset in daily work and life.

CaseConducting Mental Health Lectures, Focusing on the Holistic Development of Employee Health

Professor Yu Fang's lecture on mental health knowledge

Employee Health and SafetyThe Company fully implements the important instructions and directives on production safety by General SecretaryXi Jinping, adheres to the work arrangements of the national and provincial production safety teleconferences, andcontinuously builds and improves the standardization system of occupational health and safety management andproduction safety. The Company establishes and perfects the responsibility system for safety management andoccupational disease prevention and control, strengthens the primary responsibility for safety management andoccupational disease prevention and control, and implements various occupational health and safety managementmeasures, providing a solid foundation for achieving safety strategic objectives.

Caring for Employees and Ful?lling Mission Responsibilities

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2023 Environmental, Social, and Governance (ESG) Report

Occupational Health and Safety Management System Certi?cate

Production Safety Standardization Certi?cate of Datun Tin Mine and Kafang BranchOccupational health and safety objectives

<5‰

Injury rateper thousandpersons

"0"

serious injury

accidents

"0"

death accidentsfrom work-relatedcauses

<1‰

Incidence ofoccupationaldisease

Contents of "three-level safety education" of contractors

To enhance employees' awareness of safety in production, the Company organized the "Production Safety Month"activities. This included a series of initiatives such as ?re safety promotion, signing production safety commitment letters,and conducting assessments and supervision of safety and environmental responsibility certi?cates. The Company alsoorganized all employees to participate in online activities for Production Safety Month through related APPs. Throughengaging participation methods such as online knowledge contest scoring, posting short videos on Kuaishou, watchinglive videos of "Escape Drill Training Camp" and signing in, the number of employees participating in the trainingsigni?cantly increased, e?ectively enhancing employees' safety awareness.During the reporting period, a total of 11,949 employees participated in the online knowledge contest themed "EveryoneTalks About Safety, Everyone Knows Emergency Response". Additionally, 11,528 employees participated in the online"Escape Drill Training Camp" activities, and 13 short videos of safety popular science knowledge of "Escape DrillTraining Camp" were organized and ?lmed. This allowed employees to learn safety knowledge in a relaxed and pleasantatmosphere and improve their self-protection ability.

The Company has established a "one person with one ?le" system for safety educationand training, allowing admission only after passing the training examination.

Employees must undergo professional training, pass the examination, and obtain100% of the relevant quali?cation certi?cates before they can start their jobs.

Contractors are required to pay industrial injury insurance for all their employees.

Case"Everyone Talks About Safety, Everyone Knows Emergency Response" Production Safety Month

"Escape Drill Training Camp" and online

knowledge contest

Launching Ceremony of "Production Safety Month"

three-level safetyeducation

Caring for Employees and Ful?lling Mission Responsibilities

103104

2023 Environmental, Social, and Governance (ESG) Report

Through a series of measures, the Company has formed a comprehensive and three-dimensional publicity approach withwide channels, multiple angles, and abundant content, e?ectively enhancing workers' awareness of occupational healthself-protection. During the reporting period, to enhance employees' awareness of production safety and the hazards ofoccupational diseases, the Company actively carried out various types of safety training. The Company organized andwatched 51 events including the "10.15" Major Roof Accident Warning Educational Film of Fusheng Coal Mine in FuyuanCounty and the "10.15" Major Water Disaster Accident Warning Educational Film of Xinglong Coal Mine in Zhenxiong County,with a total of 3,815 participants.In addition, the Company organized the "6.16" Safety Publicity Consultation Day activities, distributed more than 2,500 copiesof production safety knowledge manuals, placed 8 popular science exhibition boards, and answered and explained productionsafety knowledge for more than 200 people for the broad masses of workers and the public. The Company organized 440 publicsafety commitments, totaling 1,618 participants; seventeen publicity activities of "I Know the Risk of Hot Work" were carried out,with a total of 530 participants. These measures further strengthened the main responsibility of occupational disease preventionand production safety in enterprises, and e?ectively guaranteed the health rights and interests of the majority of employees.

CaseOrganizing the "Safety First" Speech Contest to Shape Employees' Production Safety Concept

"Safety First" speech contest

"Occupational Disease Prevention Law Publicity Week" activities

"Production Safety Consultation Day" activities

Community Communication and Public WelfareParticipation in social communication and the development of public welfare initiatives are important components of theCompany's social responsibility. Participation in social communication and the development of public welfare initiativesare important components of the Company's social responsibility. In the course of conducting business, the Companyfocuses on actively maintaining relationships with the local community. This is achieved by actively assisting communityresidents with tasks such as road construction for farming, water delivery and water conservancy repairs, equipmentrepair assistance, and local employment support. These e?orts have helped establish a relationship of mutual trust andsupport with local community members.Furthermore, the Company will continue to strengthen its support for rural revitalization initiatives. This includesthoroughly implementing the spirit of the 20th National Congress of the Communist Party of China and the importantexpositions of General Secretary Xi Jinping on rural revitalization. The Company continues to promote the consolidationand expansion of poverty alleviation achievements and e?ectively links up with rural revitalization. This further aids thedevelopment of linked industries, infrastructure construction, and improvement of living environments.

During the reporting period, in order to assist impoverished individuals in increasing their income, the Companyinvested CNY 535,000 in local industries to improve the quality and e?ciency of 500 mu of tea and 1,000 mu of staranise. The Company distributed 5,000 chicks, 10,000 ducklings, and 5,000 goslings. It also trained one individual tolead in planting and one to lead in breeding to become wealthy. The Company made a directional purchase of 37.42tons of terraced red soft rice, worth CNY 484,900, continuing to do a good job of industrial assistance.

CasePromoting Local Industry Revitalization and Supporting the Development of Characteristic Industries

On-site veri?cation of tea quality

and e?ciency improvement

On-site veri?cation of star anisequality and e?ciency improvement

Red soft rice seedling planting site Poultry hatchlings breeding situation

Datun Tin Mine received a bannerof honor from local residents.

During the reporting period, the Company conducted a total of 8,949 safety knowledgepromotion and safety training activities, with a total of249,871 participants. Additionally,961 safety and emergency science videos were released online, with 1,016 participants

attending live webcasts.

2023

Key Performance

Caring for Employees and Ful?lling Mission Responsibilities

105106

2023 Environmental, Social, and Governance (ESG) Report

During the reporting period, to promote the implementation of the assistance objectives for Mazong Village, theCompany invested CNY 1.1402 million in infrastructure construction assistance funds. The focus was on hardening436 meters, (approximately 1,220 square meters) of production roads across four village groups, repairing 501meters of guardrails, 1,621 meters of drainage ditches, and 674.5 square meters of retaining walls. The completed"Huinong Bridge" bene?ts 10 villager groups across four village committees. The Company also invested CNY 100,000in 12 villager groups to carry out special activities for environmental sanitation management and green villageconstruction, continuously promoting infrastructure construction.

During the reporting period, to ensure precise and detailed assistance measures, the Company's village team conductedhousehold visits at least once a month, regularly assessing and reporting on the village's poverty situation. As of now,there are no individuals in Mazong Village with a per capita net income of less than CNY 10,000. To e?ectively carry out"Nurturing Wisdom and Fostering Aspirations", the Company conducted welder technical training and issued certi?catesto 45 quali?ed trainees. It mobilized ?ve village cadres to upgrade their academic quali?cations and organized relevantscienti?c and technological personnel to conduct batch training on planting knowledge for approximately 1,600 farmersin Mazong Village. This has e?ectively enhanced the farmers' planting techniques and pest control technology.

CaseContinuously Strengthening Specialized Work and Timely Understanding of Assistance Situations

Inspection at Huinong Bridge

Collection of household information by the village team

Planting theory training

Repair of guardrail

Household visits by the village team

Labor training

To strengthen the role of Party building leadership and e?ectively carry out the mutual pairing and co-constructionwork between the Company and Mazong Village, the Company has deployed all 8 members to the village work teamto complete rotation tasks. The Company organized three sessions of professional theoretical knowledge training for13 Party branch secretaries and Party workers, and resolved 36 practical di?culties and accomplished 32 practicaltasks for the masses. During the reporting period, the Company donated more than 100 volumes of Party knowledgebooks to the Mazong Village Party and Mass Service Center. The village work team members saved over CNY 140,000of work funds to timely resolve temporary and emergent di?culties for villagers, equipped the village committeewith some o?ce equipment, and continuously promoted Party building assistance.a

CaseStrengthening Infrastructure Upgrades and Creating a Beautiful Community TogetherCaseParty Building Leadership and Paired Assistance

Group leaders meeting with village team members in a symposium

Party building knowledge books

2023

Key Performance

During the reporting period, the Company directly invested CNY 1.7752 million inassistance funds, consumed and assisted with CNY 478,700 worth of agriculturalproducts, and invested CNY 20,200 in other items, totaling CNY 2.2741 million.The Company actively developed 91 new public welfare posts.

Key Performance

Corporate Governance

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Corporategovernance

Number of general meeting of

stockholders

times345

Number of board meetingstimes999Number of members of the board of

directors

persons1188

Disclosure bygender

Male directorpersons967Female directorpersons221Disclosure by

type

Independent directorpersons433Independent directorpersons755Number of meetings of the board of

supervisors

times999Number of meetings of the Strategic

Development Committee

times445

Number of meetings of Audit Committeetimes988Number of meetings of Nomination

Committee

times024Number of meetings of Remunerationand Appraisal Committee

times123

Operatingperformance

Economicindicator

Operating income

RMB 10,000

Yuan

5,384,432.415,199,784.414,235,925.65

Net pro?t

RMB 10,000Yuan

303,826.91157,015.58152,642.93Total tax payment

RMB 10,000Yuan

182,914.09230,101.86142,337.28Total cash dividends(including tax)

RMB 10,000Yuan

18,103.8219,749.6242,790.85Cash dividend for every

10 shares

RMB 10,000Yuan

1.101.202.60

Environment

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Energyconsumption

Natural gascubic metre9,276,0548,379,6217,806,890Raw coalton125,880127,926132,544Diesellitre25,97223,88024,981Gasoline

Note: The gasoline/dieselconsumption of vehicles, onlyincluding the company-ownedvehicles, excluding third-partytransport vehicles"

litre198192176

Renewable energy KWh1,599,870,3001,618,126,0671,750,007,924Purchased electricity

Note: If there are any overseasoperations, please indicateseparately the purchasedelectricity in these countries orregions."

KWh1,919,218,3921,973,324,4722,011,503,361

Gas pollutantemission

Total exhaust emissioncubic metre8,313,513,8827,448,635,8097,579,004,072

Waterresources

usage

Groundwater usagecubic metre4,305,5534,018,1951,571,053Circulating waterconsumption

cubic metre108,690,331124,734,207.10218,560,009

Waterpollutantdischarge

Total wastewater dischargecubic metre3,262,550 2,643,888 1,173,681Environmental

protectioninvestment

Environmental protection

investment

RMB 10,000Yuan

37,65946,58234,324

Greenhousegas emissions

Direct (Scope I) greenhousegas emissions

ton1,181,631.80754,898Indirect energy (Scope II)greenhouse gas emissions

ton804,099.10837,352

107108

2023 Environmental, Social, and Governance (ESG) Report

Products and Services

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Product liability

and services

Number of complaintsreceived about products and

pcs7110

Product percent of pass%100100100

Customer satisfaction%98.5199.399.5

Innovationand intellectualproperty protection

Number of patents heldpcs351326353Number of invention patents

held

pcs13310086

Number of annual new

patents

pcs785760

Number of trademarks heldpcs404040Employee

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023Employeerights andinterests

Proportion of labor contract signing%100%100%100%

Employeeemployment

Total number of employeesNote: The number of employees as ofthe end date of this ?scal year, the same

below"

persons16,243 15,473 13,850

By gender

Malepersons12,728 12,116 10,920Femalepersons3,515 3,357 2,930

Byemployment

type

By labor contractpersons15,878 15,400 13,781By labor dispatchpersons310 66 57

Otherspersons55 7 12

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Employeeemployment

By age

5151 years old andabove

persons2,797 2,760 2,449415041 to 50 years oldpersons4,451 4,227 4,095314031 to 40 years oldpersons6,656 6,460 5,7373030 years old andbelow

persons2,339 2,026 1,569

By academicquali?cations

Bachelor degree orabove

persons2,631 2,730 2,600Junior collegepersons3,862 3,788 3,491Technical secondaryschool and below

persons9,750 8,955 7,759

By employeecategory

Proportion of grass-roots employees

%99.24%99.32%99.38%Proportion of femaleemployees in middlemanagement

%13.79%15.96%15.58%Proportion of femaleemployees in seniormanagement

%20.00%16.67%16.67%Number of minority employeespersons5,239 5,129 4,930Number of disabled employeespersons138 124 118

Employeeturnover rate

Total number of employees leaving the

companyNote: It includes those who voluntarilyleave, as well as those who terminatetheir employment relationship with thecompany due to layo?s, retirement,death, etc., the same below

persons774 1,280 813

Employee turnover rate%4.55%7.64%5.54%109110

2023 Environmental, Social, and Governance (ESG) Report

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Employeeturnover rate

By gender

Number of maleemployees leaving the

company

persons604 973 643

Number of femaleemployees leaving thecompany

persons170 307 170

By age

51Number of employeesleaving the company

aged 51 and above

persons414 650 6014150Number ofemployees leaving thecompany between 41

and 50 years old

persons169 322 1233140Number ofemployees leaving thecompany between 31and 40 years old

persons122 190 46

30Number of employeesleaving the companyaged 30 and below

persons69 118 43

By region

Number of employeesleaving the companyfrom Chinese mainland

%773 1,278 813Number of employeesleaving the companyfrom Hong Kong, Macaoand Taiwan

%1 0 0Number of employeesleaving the companyfrom other countriesand regions

%0 2 0

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Employeeturnover rate

Byemploymenttype

By labor contract%748 1,062 809By labor dispatch%21 208 3

Others%5 10 1

Employee

training

Total number of employees trainedpersons16,243 15,473 13,850Average duration of training for

employees

hours50 50 58Total number of employees receiving

safety training

persons16,243 15,473 13,850Average duration of safety training for

employees

hours27.6230.8623.54Total number of employees receivingenvironmental training

persons16,243 15,473 13,850Average duration of environmentaltraining for employees

hours4.224.788ESGAverage duration of ESG training for

employees

hours37.53 41.93 40.37Total investment in employee trainingYuan9,501,309.70 7,535,543.67 14,267,384.40

By gender

Total hours of trainingfor male employees

hours678,826 648,185 518,674Total hours of trainingfor female employees

hours126,378.20 118,523.50 165,361.60

By employeetype

Total hours of training forgrass-roots employees

hours795,704.20 756,470.50 675,539.00Total hours of trainingfor middle managementemployees

hours9,135 9,372 7,711Total hours of trainingfor senior managementemployees

hours614 144 1,744111112

2023 Environmental, Social, and Governance (ESG) Report

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Employeehealth and

safety

Employeehealth

Number of employeesin occupational diseaserisk positions

persons777 745 699Number of employeesparticipating inphysical examination ofoccupational diseases

persons9,143 10,405 8,239Number of employeeswith occupational

diseases

hours9 9 8

Social insurance

coverage rate

%100%100%100%

Safetyaccidents andpersonnel

Number of employment

injuries

persons503030Number of employmentinjury accidents

case503028

Employeehealth andsafety

Safetyaccidents andpersonnel

Number of working dayslost due to employment

injuriesNote: Days of absencedue to employmentinjuries"

Day2,609 1,515 2,583

Employment injuries permillion working hours

%1.8351 0.9589 1.0441

Rate of lost workinghours per millionworking hours

%683.9691 374.8840 745.9928Investment inemployee'soccupational health and

safety

RMB10,000Yuan

19,672 36,614 23,006

Relationship between Industry and Community

Disclosure ItemUnit

Data FillingYear 2021Year 2022Year 2023

Supply chainmanagement

Total number of supplierssuppliers544Percentage of suppliers whohave signed clauses containingenvironmental and laborrequirements

%100100100

Number of suppliers whohave carried out social impact

assessment

suppliers323Number of suppliers who havecarried out environmental impact

assessment

suppliers323Total number of annual new

suppliers

suppliers212Expenditure proportion of localsuppliers' procurement

%202525Social welfare

Rural revitalization capital

investment

RMB 10,000Yuan

184.44 254.22 227.41

113114

2023 Environmental, Social, and Governance (ESG) Report

Index of Indicators

GRICASS-ESG5.0SDGsChapter I - Opening

1.1 About This ReportG2-1;G2-2;G2-3;G2-14P1.1; P1.2; P1.3; G3.7

1.2 Responsibility StatementP2.1; P2.2

1.3 Introduction to Yunnan TinG2-6P3.1; P4.1; P4.2; P4.3; G3.11

1.4 The Company's Journey Towards

Sustainability

G2-16; G2-22; G2-29G2.1; G3.5; G3.6Special Topic: Leading High-QualityMine Development through DigitalIntelligence

S4.2; S4.6; V2.2Chapter II - Steady Operation and Laying a Solid Foundation for Development

2.1 Corporate GovernanceG2-9; G2-10; G2-12; G2-17G1.1; G1.2;

2.2 Investor Relations ManagementG1.10

2.3 Compliance and Risk ManagementG2-12G1.3; G1.4

2.4 Integrity and Self-CultivationG205-1; G205-2G1.6; G1.7; G1.8; G1.9

2.5 Party Building Leadership

Chapter III - Guarding the Earth and Drawing a Picture of Green Prosperity

3.1 Biodiversity

G101-1; G101-2; G101-4;G101-5; G101-6; G101-7;G101-8; G301-1

E1.5; E4.1; E4.2; E4.3; V4.4;

V4.5

3.2 Tailings Pond ManagementG306-1; G306-2V4.4

3.3 Climate Response ActionsG305-1; G305-2; G305-5

E2.4; E2.5; E5.1; E5.4; E5.5;

E5.6; V4.1; V4.2; V4.3

3.4 Mineral Resources ProtectionV1.1; V1.3; V2.6

GRICASS-ESG5.0SDGsChapter IV - Leading with Environmental Responsibility and Green Mission

4.1 Environmental ManagementE1.1; E1.2; E1.6; E1.7

4.2 Resource Management

G302-1; G302-3; G302-5;G303-2; G303-3; G303-5

E2.1; E2.2; E2.3; E2.9; E2.10;E2.11; E2.12; E2.13

4.3 Emission Management

G305-7;G306-1;G306-2;G306-3;G306-5

E3.1; E3.2; E3.3; E3.4; E3.5;E3.6; E3.8; E3.10

4.4 Environmental SafetyE1.4; E1.8

Chapter V Lean Management - Empowering Diverse Values

5.1 Industrial Chain ManagementG308-1S4.5; S4.7; S5.1; S5.2; S5.6

5.2 Technological InnovationV2.1; V2.4

5.3 Quality ManagementS4.1; S4.2; S4.6

5.4 Industry CooperationV2.5; V2.7; V2.8

Chapter IV - Caring for Employees and Ful?lling Mission Responsibilities

6.1 Talent Philosophy

G2-7; G401-1; G404-1; G404-2; G405-1;G408-1; G409-1

S1.1; S1.2; S1.6; S1.3; S2.1;S2.2; S2.4

6.2 Employee Compensation and Bene?ts

G201-3; G401-2; G2-20;G406-1

S1.7; S1.10

6.3 Employee Health and Safety

G403-1; G403-2; G403-3; G403-4; G403-5; G403-6

S3.1; S3.2; S3.4; S3.5; S3.6;S3.7; S3.8; S3.9;S3.10

6.4 Community Communication and

Public Welfare

G203-1; G413-1V3.1; V3.3; V3.4; V3.6; V3.7Index of IndicatorsG204-1;G302-2A4Performance

G201-1; G403-9; G403-10;

G404-3; G405-2; G414-1;

G414-2

G3.9; G3.10; E1.3; S1.4; S1.5;S1.8; S1.11; S2.3; S3.3; S3.11;S3.12; S5.3; S5.7; V3.2; A2Independent Assurance OpinionStatement

A3Reader FeedbackA5115116

2023 Environmental, Social, and Governance (ESG) Report

Independent Assurance and Statement of Opinion

InFaith Group (here in after referred to as "InFaith"), as entrusted by Yunnan Tin Co., Ltd. (hereinafter referredto as "Yunnan Ti"), has conducted independent limited assurance of the environmental, social and governanceinformation and data disclosed in 2023 Environmental, Social, and Governance (ESG) Report of Yunnan Tin Co., Ltd.(hereinafter referred to as the Report), and disclosed the assurance result and conclusion to readers of the Report inthe form of independent assurance and statement of opinion.

Independence and Capability

1. All the assurance team members of InFaith have no business relationship with Yunnan Tin that leads to con?icts of interest.

The team of InFaith has performed this assurance work independently.

2. The assurance team of InFaith consists of experienced professionals in the industry. Relevant persons have received

professional training on the GRI Standards issued by the Global Reporting Initiative, AA1000AS v3, ISO 14001, ISO 26000, SA8000, EcoVadis global supply chain rating and other sustainability-related standards and have adequate understanding andpractical experience in relevant international principles, evaluation systems and assurance standards.Assurance Statement

1. Yunnan Tin management shall be fully held accountable for the preparation and content of the Report. It is the

responsibility of InFaith to conduct an assurance based on the scope as described herein, and to provide professionalassurance opinions to the Report readers and stakeholders.

2. Based on the assurance scope limits, InFaith shall, in accordance with AA1000AS v3, conduct independent limited

assurance and guarantee conclusion for the matters within the scope de?ned in the Report. In addition to providingindependent assurance and making other statements of opinion on the facts of assurance under the conclusion, InFaithwill not assume any legal or other liabilities for any inquiries for any other purposes, or for any other persons who readthis Independent Assurance and Statement of Opinion.

3. If you have any questions about the contents contained herein or related matters, Yunnan Tin will reply in a lump sum.

4.In the event of any con?ict or inconsistency between the Chinese version and the English version of this Independent

Assurance and Statement of Opinion, the Chinese version shall prevail.Assurance StandardInFaith adopts AA1000AS v3 type-2 medium assurance level, which includes Yunnan Tin's evaluation of the compliance situationand degree of the four AA1000AS v3 assurance principles, including inclusiveness, substantiality, responsiveness and impact.Assurance Scope

1. The assurance scope is limited to the information and data of Yunnan Tin and its a?liated companies covered by

the Report, excluding the data and information of Yunnan Tin suppliers, contractors and other third parties.

2. InFaith adopts AA1000AS v3 type-2 medium assurance level to evaluate Yunnan Tin's compliance nature and

degree of the four assurance principles in AA1000AS v3.

3. Yunnan Tin and InFaith have reached an agreement to select speci?c performance information in the Report as

part of the assurance contents. The selected speci?c performance indicators are as follows:

· Total emissions of exhaust gases??· Total discharge of wastewater??· Total employee count??· Customer satisfaction rate· Average duration of employee training??· Total investment in employee training??· Lost working hour rate per million working hoursAssurance Process and Work

In order to gather evidence relevant to the formation of the conclusion, InFaith has done the following work:

1. Had interviews with the management team and employees of Yunnan Tin, to understand the overall situation and

relevant processes of the ful?llment of its environmental, social and governance responsibilities.

2. Veri?ed key developments and policy implementation of the relevant Yunnan Tin's organizations and reviewed

supporting evidence for the claims made in the Report.

Inclusiveness

Yunnan Tin has announced major topics that will have substantial in?uence and impact on the evaluation, decision-making, actions and performance of the organization and its stakeholders, and judged and improved the managementand performance of the issues.Substantiality

Yunnan Tin has implemented relevant policies, and is able to respond to issues that concern the stakeholders in a timelymanner.Responsiveness

Yunnan Tin has implemented relevant policies, and is able to respond to issues that concern the stakeholders in a timelymanner.Impact

Yunnan Tin has the adequate ability to identify substantive issues. It has implemented balanced and effectiveevaluation and disclosure methods, and has established a systematic process for monitoring, measurement, evaluationand management impact, so as to achieve more efficient management of decision-making and results within theorganization, and demonstrate the impact of the substantive issues in an impartial and objective manner.

Assurance Conclusions

1. According to the information provided by Yunnan Tin and the sample test, there is no material misrepresentation in the Report.

2. For the principles of inclusiveness, substantiality, responsiveness and impact included in AA1000AS v3, the detailed assurance

conclusions are as follows:

3. Through the interviews and the assurance of relevant documents, learned about Yunnan Tin's main stakeholders and

their expectations and demands, the specific communication channels between both parties, and how Yunnan Tinresponds to their expectations and demands.

4. Selected the relevant part of environmental, social and governance information in this Report, performed analytical

assurance procedures for such information, con?rmed the overall performance situation, and evaluated and veri?edwhether the contents of the Report are complied with.

5. Veri?ed the process management of the principles of inclusiveness, substantiality, responsiveness and impact in the

Report and its related AA1000 to con?rm the appropriateness of this Statement.

6. Sampled inspection on supporting evidence of data reliability and quality of selected speci?c performance information.

7. Recalculated and veri?ed the selected speci?c performance information.

8. Performed other procedures that we deemed necessary.

3. Based on the procedures implemented and the evidence obtained by InFaith, we have found nothing that causes us to doubt

the reliability and quality of the speci?c performance indicators selected in the Report.LimitationThe assurance process was carried out at the location within the scope of the Report.Because there is no internationally recognized and commonly used standard for the evaluation and measurement ofnon-?nancial information, the application of di?erent but acceptable information and measurement technologiesmay a?ect the comparability with other institutions.If you have any advice for this Independent Assurance and Statement of Opinion, you may contact:

Tel: 021-20740303Email: esg@infaith.com.cnAddress: 8F, 388 Fushan Road, Pudong New District, Shanghai

Zhong Wentang, Managing Partner of the Sustainable Development Department of InFaith

InFaith Group Shanghai, April 2024117118

2023 Environmental, Social, and Governance (ESG) Report

Address: No.471, Minhang Road, Guandu District, Kunming, YunnanPostal Code: 650 216Tel.: 0871-66287901; 0871-66287902Email: xygfzqb@qq.com; 342748293@qq.com


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