RT null T1 HS Codes for Mercury-Added Products A1 Zero Mercury Working Group, A1 United Nations Environment Programme, K1 mercury K1 mercury contamination YR 2018 FD 2018-11 LK https://wedocs.unep.org/handle/20.500.11822/27137 UL https://wedocs.unep.org/handle/20.500.11822/27137 NO This document outlines proposed revised customs codes for better data and better implementation of the Minamata Convention on Mercury DS UN Environment Document Repository RD Sep 21, 2026