Home / Standards / GB/T 9489-2008 GB/T 9489-2008 Abolished Chemical analysis methods of alundum powder 刚玉粉化学分析方法 Standard Type GBT ICS 91.100.10 CCS Q62 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