Home / Standards / GB/T 5120.3-1995 GB/T 5120.3-1995 Copper—Methods for chemical analysis—Determination of gold and silver contents 粗铜化学分析法 金和银量的测定 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A