Home / Standards / GB/T 37175-2018 GB/T 37175-2018 Active Coking carbazole 焦化咔唑 Standard Type GBT ICS 71.080.15 CCS G16 Status 现行 Issue Date 2018-12-28 Implementation 2019-07-01 Responsible Dept 国家标准委 Drafting Unit N/A