Home / Standards / GB 199-1990 GB 199-1990 Abolished Rapid harding portland cement 快硬硅酸盐水泥 Standard Type GB ICS 91.100.10 CCS Q11 Status 废止 Issue Date 1990-12-15 Implementation 1991-10-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A