Home / Standards / GB/T 43019.4-2025 GB/T 43019.4-2025 Active Determination of water vapour transmission rate for plastics film and sheeting—Part 4: Gas chromatographic method 塑料薄膜和薄片水蒸气透过率的测定 第4部分: 气相色谱法 Standard Type GBT ICS 83.140.10 CCS G31 Status 现行 Issue Date 2025-10-05 Implementation 2026-05-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A