Home / Standards / GB/T 37993-2019 GB/T 37993-2019 Active Potassium aurocyanide 氰化亚金钾 Standard Type GBT ICS 71.060.50 CCS G12 Status 现行 Issue Date 2019-08-30 Implementation 2020-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A