Home / Standards / GB/T 45939-2025 GB/T 45939-2025 Active Co-extrusion encapsulant film for photovoltaic module 光伏组件封装用共挤胶膜 Standard Type GBT ICS 31.030 CCS L90 Status 现行 Issue Date 2025-08-01 Implementation 2025-11-01 Responsible Dept 国家标准委 Drafting Unit N/A