Home / Standards / GB/T 8208-2007 GB/T 8208-2007 Active Determination of gallium in coal 煤中镓的测定方法 Standard Type GBT ICS 73.040 CCS D21 Status 现行 Issue Date 2007-11-01 Implementation 2008-06-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A