Home / Standards / GB/T 45540-2025 GB/T 45540-2025 Active Greenhouse gas—Quantification method and requirements for carbon footprint of products—Man-made fibres 温室气体 产品碳足迹量化方法与要求 化学纤维 Standard Type GBT ICS 59.060.20 CCS W 50 Status 现行 Issue Date 2025-03-28 Implementation 2025-10-01 Responsible Dept 国家标准委 Drafting Unit N/A