Home / Standards / GB/T 24493-2009 GB/T 24493-2009 Active Decorative concrete brick 装饰混凝土砖 Standard Type GBT ICS 91.100.30 CCS Q14 Status 现行 Issue Date 2009-10-30 Implementation 2010-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A