Home / Standards / GB/T 45646-2025 GB/T 45646-2025 Active Greenhouse gases—The quantification method and requirement for carbon footprint of products—Internal combustion engines 温室气体 产品碳足迹量化方法和要求 内燃机 Standard Type GBT ICS 27.020 CCS J 91 Status 现行 Issue Date 2025-04-25 Implementation 2025-11-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A