Home / Standards / GB/T 15591-2013 GB/T 15591-2013 Active Judging method for Mixed coal type of commercial coal 商品煤混煤类型的判别方法 Standard Type GBT ICS 73.040 CCS D20 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