Home / Standards / GB/T 39810-2021 GB/T 39810-2021 Active High purity silver ingots 高纯银锭 Standard Type GBT ICS 77.150.99 CCS H68 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A