欧洲议会和理事会2017年5月17日第2017/821号条例（EU）规定了欧盟锡、钽和钨及其矿石和源自受冲突影响地区和高风险地区的黄金进口商的供应链尽职调查义务

Regulation (EU) 2017/821 of the European Parliament and of the Council of 17 May 2017 laying down supply chain due diligence obligations for Union importers of tin, tantalum and tungsten, their ores, and gold originating from conflict-affected and high-risk areas