Home / Standards / GB/T 13940-1992 GB/T 13940-1992 Active Polyacrylamide 聚丙烯酰胺 Standard Type GBT ICS 83.080 CCS G32 Status 现行 Issue Date 1992-12-12 Implementation 1993-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A