Home / Standards / GB/T 39549-2020 GB/T 39549-2020 Active Fiber reinforced thermosetting composites septic tank 纤维增强热固性复合材料化粪池 Standard Type GBT ICS 83.120 CCS Q23 Status 现行 Issue Date 2020-12-14 Implementation 2021-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A