Home / Standards / GB/T 1575-2001 GB/T 1575-2001 Abolished Determination of yield of benzene-soluble extract in brown coal 褐煤的苯萃取物产率测定方法 Standard Type GBT ICS 73.040 CCS D21 Status 废止 Issue Date 2001-11-12 Implementation 2002-08-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A