Home / Standards / GB/T 38968-2020 GB/T 38968-2020 Active Guidelines for circular economy practical technologies in copper smelting industry 铜冶炼行业循环经济实践技术指南 Standard Type GBT ICS 13.020.20 CCS H60/69 Status 现行 Issue Date 2020-07-21 Implementation 2021-02-01 Responsible Dept 国家标准委 Drafting Unit N/A