Home / Standards / GB/T 45331-2025 GB/T 45331-2025 Active ePTFE membrane for reinforcement of proton exchange membrane 质子交换膜增强用聚四氟乙烯膜 Standard Type GBT ICS 83.140.10 CCS G33 Status 现行 Issue Date 2025-02-28 Implementation 2025-09-01 Responsible Dept 国家标准委 Drafting Unit N/A