Organisation for Economic Cooperation & Development (OECD)+Chain of Custody/Traceability/Transparency System (Step 1.C.1)+JX Nippon Mining & Metals Co., Ltd.+2018
p. 82 "Performing supply chain due diligence before purchasing mineral raw materials (confirming the place of origin of the materials, assessing risks, confirming materials after delivery, confirming distribution route, preserving relevant documents, etc.)"