Home / Standards / GB/T 535-1995 GB/T 535-1995 Abolished Ammonium sulphate 硫酸铵 Standard Type GBT ICS 71.060.50 CCS G21 Status 废止 Issue Date 1995-12-20 Implementation 1996-08-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A