The International Tin Association (ITA) is pleased to announce the publication of Yunnan Tin Company Ltd’s third Tin Code Report, covering the reporting period January 2023 – December 2024.
This report has been assessed under the updated Tin Code standards introduced in May 2022, which strengthened the overall framework and resulted in certain additional standards becoming relevant to the company’s operations for assessment under the Tin Code.
Yunnan Tin Company Ltd, the world’s largest tin producer, continues to demonstrate strong and structured engagement with the Tin Code across its integrated mining, processing, and smelting operations in China. The Gejiu smelter remains central to its operations, accounting for the majority of refined tin production within the reporting scope.
This latest report highlights robust ESG systems, strong conformance outcomes, and continued operational improvement, supported by ISO 9001, ISO 14001, and ISO 45001 certifications.
Key updates
- Strong Priority Standards performance:
Overall conformance has reached strong alignment with Priority Standards, reflecting continued ESG progress. - Strong health & safety systems:
Third-party verification confirms full ISO 45001 alignment, including incident management and safe working practices. - Strengthened environmental performance:
Third-Party Verified under ISO 14001, with improvements in water management (2.3) and waste minimisation (2.9, 2.10), supporting emissions, water, and waste controls. - Strong labour and governance performance:
Full conformance across labour standards, including non-discrimination, fair pay, working hours, freedom of association, and protections against forced and child labour, supported by training and management systems. - Strengthened community and social management systems:
Ongoing improvements in community health and safety (6.2), natural resource management (6.9), and cultural heritage training (6.11), with enhanced community engagement procedures. - Continued improvement in supplier engagement (Principle 8):
Positive progress in supplier engagement, including strengthened practices, advancement in ASM-related standards, and ongoing development of broader supplier management systems.
YTC’s continued participation in the Tin Code reflects its commitment to sustainable and responsible production, structured ESG management, and continuous improvement across its global tin operations.
Read the full report here: Tin Code Reports
The International Tin Association (ITA) is pleased to announce the publication of Thailand Smelting and Refining Co Ltd (Thaisarco)’s fourth Tin Code Report, covering 1 June 2024 – 31 May 2025.
Thaisarco, a long-established tin smelter based in Phuket, continues to play an active role in the Tin Code, contributing to a growing network of producers advancing sustainable, responsible and transparent tin production.
This latest report highlights strong ongoing engagement and continued ESG progress across key operational areas, supported by established systems and third-party verification.
Key updates
- Strong Priority Standards performance:
71% conformance in relevant Priority Standards, reflecting continued ESG progress and structured improvement. - Health & Safety excellence:
Third-party verified occupational health and safety management through ISO 45001 certification, reinforcing robust systems for safe working practices, training, and incident management. - Stronger governance:
Continued advancement of management systems and business integrity frameworks. - Greater transparency:
Ongoing improvements in reporting quality, disclosure, and documentation practices. - Supply chain engagement:
Continued implementation of Principle 8, with strengthened engagement across ASM and LSM suppliers on environmental, health, safety, and community practices.
The report reflects Thaisarco’s sustained commitment to continuous improvement and its contribution to strengthening responsible sourcing within the global tin industry.
Read the full report here: Tin Code Reports
The International Tin Association (ITA) is pleased to announce the publication of Operaciones Metalúrgicas S.A. (OMSA)’s 2024 Tin Code Report. Based in Oruro, Bolivia, OMSA is a leading tin producer and an active participant in the Tin Code, demonstrating strong commitment to sustainable, responsible, and transparent tin production.
The report follows ITA’s recent on-site visit, conducted with independent assessor, Paul Mitchell of Green Horizons Ltd. The visit included operational review, guidance on reporting practices, and support OMSA’s continued progressive improvement of the Tin Code standards. A visit to Empresa Metalúrgica Vinto S.A. (EM Vinto) provided broader regional context and explored opportunities for collaboration on sustainability practices.
During the visit, ITA worked closely with OMSA’s management and technical teams, reviewing smelting and processing operations, advising on evidence collection, documentation, and Tin Code standards. This hands-on support ensured the 2024 report accurately reflects OMSA’s performance.
The report highlights OMSA’s strong results: improvements across 41 standards, with most standards rated Conforming or Third-Party Verified. Priority Standards achieved 75% conformance, double the previous report’s 37.5%, positioning OMSA as a leading example among tin producers globally.
A particular highlight is Tin Code Principle 8: Seek to positively influence practices of suppliers of materials, goods and services. OMSA demonstrated robust engagement with cooperative suppliers, including site visits, policy reviews, environmental management, and occupational health and safety follow-ups – showing tangible impact in Bolivia and setting a benchmark for sustainable supply chain practices worldwide.
Further improvements were recorded in occupational health and safety, environmental monitoring, and documentation, reflecting OMSA’s ongoing ESG alignment and continuous improvement.
The ITA commends OMSA for its openness, collaboration, and commitment to continuous improvement. The combined process of on-site engagement and structured reporting demonstrates how targeted support and guidance can drive meaningful progress in sustainable tin production.
Read the full report here: Tin Code Reports
The International Tin Association (ITA) announces the publication of Fenix Metals’ fifth Tin Code Report, covering June 2023 – October 2025.
Most significantly, the report confirms that Fenix Metals is the first ITA member to achieve Conforming status across all relevant Tin Code standards, including all relevant Priority Standards, under the current (post-May 2022) standard. These ratings have been independently assessed and verified by the independent external assessor.
Conforming and Third-Party Verified status is progressed or maintained across all relevant Priority Standards covering legal compliance; banned substances; protected areas; safe working practices; forced labour; child labour – worst forms; use of private or state security personnel; and responsible sourcing.
Conformance is required for the 10 Priority Standards, which address the most material ESG risks. The remaining standards are structured to support continuous improvement over time.
“I am very proud of this achievement. It reflects the hard work and commitment of the whole Fenix Metals team throughout the year. We already refer to the Tin Code in our communication with business partners and auditors, and we are especially pleased that we can now share that Fenix Metals has achieved full conformance with the current relevant Tin Code standards. This is an important confirmation of our continued focus on ESG, responsible sourcing and transparency.” Jolanta Sapielak, Quality Assurance Manager at Fenix Metals
With this publication, Fenix Metals becomes the first ITA member to publish five Tin Code Reports, demonstrating sustained and structured engagement with the Tin Code as a progressive ESG standard. The company continues to show consistent year-on-year improvement across the 72 Tin Code standards, where applicable to its operations, reinforcing its long-term commitment to sustainable production and transparency.
This result establishes a benchmark for other tin producers progressing within the Tin Code, highlighting the role of structured systems, openness, and continuous improvement in achieving sustained ESG advancement.
Read the full report here: Tin Code Reports
Aurubis Beerse NV has successfully achieved third-party verification under Tin Code Assurance, reenforcing its commitment to responsible sourcing and transparent supply chain practices.
The independent assurance, conducted by ARCHE Advisors, covered Aurubis Beerse’s Belgium tin smelter and included review of its due diligence systems and public reporting against the ITA-RMI Assessment Criteria for Tin Smelting Companies (version 2, 25th March 2021), with the assurance report dated 11 April 2026.
Key Highlights:
- This verification relates specifically to Standard 7.3 (Responsible Sourcing), one of the 72 environmental, social and governance standards of the Tin Code.
- Aurubis Beerse has implemented policies and procedures to assess potential risks and seek to avoid support to conflict, human rights abuses, and other significant harms.
- During the reporting period, the Beerse site sourced mainly recycled (secondary) materials, along with limited intermediate materials (e.g., FeSn hardhead) and unused metal products. All intermediate and additional materials were sourced exclusively from RMAP Conformant smelters.
- An independent alignment assessment confirmed that the Tin Code Assurance process and Standard 7.3 Criteria are fully aligned with the OECD Due Diligence Guidance for Responsible Sourcing of Minerals from Conflict-Affected and High Risk Areas, including standards, implementation, and audit management process under the Tin Code.
Looking Ahead: This rating for Standard 7.3 (Responsible Sourcing) was determined according to the normal Tin Code validation procedure following Aurubis Beerse’s independent assurance engagement. It will be included in the next scheduled Tin Code Report covering all 72 ESG standards.
See the following for additional context on Tin Code Assurance, its independent validation process, and how it is used by tin users and downstream stakeholders.
White Solder Metalurgia e Mineração LTDA has successfully achieved third-party verification under Tin Code Assurance, reaffirming its commitment to responsible sourcing and transparent supply chain practices.
The independent assurance, conducted by ARCHE Advisors, covered White Solder’s Ariquemes smelter and included review of its due diligence systems and public reporting against the ITA-RMI Assessment Criteria for Tin Smelting Companies (version 2, 25th March 2021), with the assurance report dated 14 April 2026. This marks the third consecutive year that White Solder has undergone independent assurance under the Tin Code.
Key Highlights:
- This verification relates specifically to Standard 7.3 (Responsible Sourcing), one of the 72 environmental, social and governance standards of the Tin Code.
- White Solder has implemented policies and procedures to assess potential risks and seek to avoid support to conflict, human rights abuses, and other significant harms.
- During the reporting period, 100% of cassiterite inputs were sourced from Brazil, with no material originating from CAHRA-designated regions.
- An independent alignment assessment confirmed that the Tin Code Assurance process and Standard 7.3 Criteria are fully aligned with the OECD Due Diligence Guidance for Responsible Sourcing of Minerals from Conflict-Affected and High Risk Areas.
Looking Ahead: This rating for Standard 7.3 (Responsible Sourcing) was determined according to the normal Tin Code validation procedure following White Solder’s independent assurance engagement. It will be included in the next scheduled Tin Code Report covering all 72 ESG standards.
See the following for additional context on Tin Code Assurance, its independent validation process, and how it is used by tin users and downstream stakeholders.
An independent assessment confirms that the standards and implementation of Tin Code 7.3 Responsible Sourcing Assurance for tin smelters is ‘Fully Aligned’ with the OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas. This achievement reflects the Tin Code’s alignment with internationally recognised due diligence practices for responsible sourcing.
The Tin Code’s responsible policies and standards were independently assessed as ‘Fully Aligned’ in 2021. A further implementation assessment between 2024 and 2026 evaluated how these standards work in practice. To ensure a thorough review, the assessment included site observations at primary and recycling tin smelters in Europe and Africa.
Key strengths in the implementation of the Tin Code programme include:
- Auditors were generally effective in challenging the sites on all areas of the Tin Code standard and underlying expectations set by the OECD.
- A strong focus on ‘continuous improvement’ which is understood by auditors.
- Supporting sites to align with the OECD Guidance while ensuring companies retained individual responsibility for due diligence.
- Knowledgeable auditors adapting assessment approaches and questions to local contexts.
- Highlighting the thoroughness of annual published audit reports and assured company Step 5 reports online, giving stakeholders access to information for efficient due diligence. The Tin Code also provides a public progression chart to demonstrate commitment to continuous improvement.
The report identified only one area for improvement regarding transport documents, which ITA is committed to clarifying as part of its training procedures.
The Tin Code Assurance is increasingly being used by smelters to support responsible sourcing and provides a robust framework for demonstrating due diligence to downstream customers and stakeholders, see reports here. Importantly, the assurance system is also available to non-ITA smelters, enabling wider adoption of OECD-aligned responsible sourcing practices across the tin industry. Outputs from the Tin Code 7.3 assurance feed directly into full ESG Tin Code reports, providing actionable insights on supply chain due diligence and supporting continuous improvement across the sector.
For transparency, ITA has published the final alignment assessment reports here: Tin Code | Responsible Sourcing
International Tin Association (ITA) signed a Memorandum of Understanding (MOU) with the China Chamber of Commerce of Metals, Minerals & Chemicals Importers & Exporters (CCCMC) during its Annual Conference on High-Quality Growth in Metals, Minerals, Chemicals & Building Materials Industry on 25 March 2026 in Beijing, China.
Both parties believe in the importance of collaboration to support the shared aims of each organisation, and to better promote efficient implementation of sustainability practices including by relevant Chinese companies under the Tin Code and the Chinese Due Diligence Guidelines for Mineral Supply Chains. Through the sharing of experiences and information, the two organisations will support the implementation of good mining practices and supply chain due diligence management based on internationally agreed frameworks and the principle of progressive improvement, and plan to explore enhanced collaboration in related areas that will support and improve areas such as the efficient use of supply chain standards and the available choice and value of different reporting and assurance tools for the upstream industry.
About CCCMC
China Chamber of Commerce of Metals, Minerals & Chemicals Importers & Exporters (CCCMC) is a nationwide and industrial non-profit social organisation formed voluntarily by units registered within the territory of the People’s Republic of China according to law and engaged in economic activities in regard to metals & minerals and related products, non-metallic minerals and related products, hardware products, building materials products, petroleum and related products, chemical raw materials and related products, as well as the upstream and downstream industrial chains in the above-mentioned fields. CCCMC works to promote sustainable practices in a wide range of sectors, including through the implementation of the Chinese Due Diligence Guidelines for Mineral Supply Chain.
About ITA
The International Tin Association (ITA) is the organisation dedicated to supporting and representing the global tin industry, with the objective of maintaining an innovative and sustainable supply chain and market for tin and has experts dedicated to markets, technology and sustainability. ITA works with leading tin producers and downstream users in cooperative activities related to important regional and global issues to provide leadership and to communicate a positive and progressive future for the whole tin industry. ITA has members in Asia, Africa, Europe and the Americas but works to promote sustainable practices of the entire tin related industry, including through the implementation of the Tin Code.
The International Tin Association (ITA) is pleased to announce that Cornish Tin, a Cornwall-based tin and lithium exploration and development company and ITA E&D Group Member, has committed to implementing the Tin Code ESG-sustainability standard for its flagship projects in West Cornwall, UK: the Great Wheal Vor Project and the Tregonning Project.
This demonstrates Cornish Tin’s strong commitment to responsible mining, sustainable development, and positive impact on local communities and the tin supply chain. By aligning with the Tin Code, Cornish Tin supports the global movement towards more sustainable and transparent practices in the mining and metals sector.
Sally Norcross-Webb, Founder and CEO of Cornish Tin, said: “Our ambition has always been to build a modern mining company that reflects the highest standards of environmental, social, and governance expectations. Committing to the Tin Code reinforces our belief that sustainability must be embedded from the earliest stages of project development. Cornwall has a proud mining heritage, and we are determined to ensure that its next chapter is defined by responsible practices, transparency, and long-term value for local communities.”
Susannah Costley-White, Tin Code Programme Manager at ITA, added: “We are delighted to welcome Cornish Tin to the Tin Code, as our third explorer and developer company since in 2023 we expanded the standard to include early stage projects to promote the adoption of high standards from day one. The Tin Code sets a strong example of how sustainability can be integrated from the earliest stages of development, helping to shape a more responsible future for the tin industry.”
Further information about Cornish Tin and its projects is available at cornishtin.uk. For more information on the Tin Code for E&Ds and how to participate, visit tincode.org/participants and internationaltin.org/explorers-developers-group.
The International Tin Association (ITA) is pleased to announce that ARCHE Advisors has expanded its team of auditors registered under Tin Code Assurance, further strengthening the pool of qualified ISAE 3000 auditors. ARCHE Advisors have been a registered since July 2025, and their team now includes Emily Brennan, Kaido Katalsepp, Alejandro López y López, and the most recent addition, Arifzal Adrianto.
The expanded ARCHE team brings extensive global experience and expertise in ESG due diligence, responsible sourcing, and mineral supply chain assessments, with auditors fluent in several languages, supported by credentials such as Tin Code, RMI, Copper Mark, LBMA, and ICMM audits.
A strong, diverse Tin Code auditor network: https://tincode.org/registered-auditors/
They conduct Tin Code 7.3 Responsible Sourcing audits, now available to all tin smelters, not just ITA members: https://tincode.org/now-available-tin-code-standard-7-3-responsible-sourcing-independent-assurance-for-all-tin-smelters/
Publicly available Tin Code audit reports can be viewed on our website: https://tincode.org/tin-code-reports/responsible-sourcing-assurance/