Home / Standards / GB/T 9776-2022 GB/T 9776-2022 Active Calcined gypsum 建筑石膏 Standard Type GBT ICS 91.100.10 CCS Q62 Status 现行 Issue Date 2022-12-30 Implementation 2023-07-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A