Home / Standards / GB/T 45902-2025 GB/T 45902-2025 Active General technical requirements for energy-saving control system for ventilation and air conditioning system in urban rail transit stations 城市轨道交通车站通风空调节能控制系统通用技术条件 Standard Type GBT ICS 91.140.30 CCS P45/49 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A