Home / Standards / GB/T 3519-2008 GB/T 3519-2008 Abolished Amorphous graphite 微晶石墨 Standard Type GBT ICS 73.080 CCS Q51 Status 废止 Issue Date 2008-08-20 Implementation 2009-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A