Home / Standards / GB/T 29721-2023 GB/T 29721-2023 Active Commercial coal quality—Coal for fluidized bed gasification 商品煤质量 流化床气化用煤 Standard Type GBT ICS 73.040 CCS D23 Status 现行 Issue Date 2023-09-07 Implementation 2024-04-01 Responsible Dept 国家标准委 Drafting Unit N/A