Home / Standards / GB/T 6646-2008 GB/T 6646-2008 Active Chrysotile asbestos test methods 温石棉试验方法 Standard Type GBT ICS 73.080 CCS Q61 Status 现行 Issue Date 2008-08-20 Implementation 2009-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A