Home / Standards / GB/T 37592-2019 GB/T 37592-2019 Active Carbonaceous mesophase spheres 中间相炭微球 Standard Type GBT ICS 29.050 CCS Q53 Status 现行 Issue Date 2019-06-04 Implementation 2020-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A