Home / Standards / GB/T 38772-2020 GB/T 38772-2020 Active Pitch from coal liquefaction 煤液化沥青 Standard Type GBT ICS 75.140 CCS G18 Status 现行 Issue Date 2020-04-28 Implementation 2020-11-01 Responsible Dept 国家标准委 Drafting Unit N/A