Home / Standards / GB/T 30044-2013 GB/T 30044-2013 Active Coal direct liquefaction―Determination of constituents of heavy products―Solvent extract 煤炭直接液化 液化重质产物组分分析 溶剂萃取法 Standard Type GBT ICS 73.040 CCS D21 Status 现行 Issue Date 2013-12-17 Implementation 2014-05-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A