Home / Standards / GB/T 20209 GB/T 20209 Upcoming Fireworks—Al-Mg alloy powder 烟花爆竹 铝镁合金粉 Standard Type GBT ICS 71.100.30 CCS Y88 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-06-01 Responsible Dept 中国轻工业联合会 Drafting Unit 中国轻工业联合会