Home / Standards / HG/T 4538-2013 HG/T 4538-2013 Abolished 水处理剂 氯化亚铁 Standard Type HG ICS N/A CCS N/A Status Abolished Issue Date 2013-10-17 Implementation 2014-03-01 Centralized Committee 工业和信息化 Issuing Authority 工业和信息化