Home / Standards / GB/T 37769-2019 GB/T 37769-2019 Active Guide for performance acceptance of determinator of coal ash fusibility 煤灰熔融性测定仪性能验收导则 Standard Type GBT ICS 73.040 CCS D21 Status 现行 Issue Date 2019-06-04 Implementation 2020-01-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A