Home / Standards / GB/T 23523-2009 GB/T 23523-2009 Abolished Determination of germanium content in germanium renewable raw materials 再生锗原料中锗的测定方法 Standard Type GBT ICS 77.120.99 CCS H66 Status 废止 Issue Date 2009-04-08 Implementation 2010-02-01 Responsible Dept 国家标准委 Drafting Unit N/A