Home / Standards / GB/T 23810-2009 GB/T 23810-2009 Abolished Specification of coal for direct liquefaction 直接液化用原料煤技术条件 Standard Type GBT ICS 73.040 CCS D20 Status 废止 Issue Date 2009-06-01 Implementation 2010-01-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委