Home / Standards / GB/T 4633-2014 GB/T 4633-2014 Active Determination of fluorine in coal 煤中氟的测定方法 Standard Type GBT ICS 73.040 CCS D21 Status 现行 Issue Date 2014-03-27 Implementation 2014-10-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A