The OECD and the Chinese Chamber of Commerce of Minerals, Metals and Chemicals Exporters (CCCMC) have recently launched the Chinese Due Diligence Guidelines for Responsible Mineral Supply Chains. These Guidelines align with the OECD Due Diligence Guidance for Responsible Mineral Sourcing from Conflict Affected and High Risk Areas and were developed in collaboration with the two organizations. A version in English and Chinese can be accessed here.
Friends of the OECD Guidelines for Multinational Enterprises 