Home / Standards / GB/T 17669.2-1999 GB/T 17669.2-1999 Active Gypsum plasters--Determination of water of crystallization content 建筑石膏 结晶水含量的测定 Standard Type GBT ICS 91.100.10 CCS Q62 Status 现行 Issue Date 1999-02-08 Implementation 1999-08-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A