Home / Standards / GB/T 46399-2025 GB/T 46399-2025 Active Fibre grade para-phenylene terephthalamide(PPTA) powder 纤维级聚对苯二甲酰对苯二胺(PPTA)粉体 Standard Type GBT ICS 59.060.20 CCS W51 Status 现行 Issue Date 2025-10-05 Implementation 2026-05-01 Responsible Dept 国家标准委 Drafting Unit N/A