Home / Standards / GB/T 45321-2025 GB/T 45321-2025 Active Measuring method for electric and photometric parameters of filament light sources for power-driven vehicles 机动车用灯丝光源光电参数测量方法 Standard Type GBT ICS 43.040.20 CCS T38 Status 现行 Issue Date 2025-02-28 Implementation 2025-09-01 Responsible Dept 工业和信息化部 Drafting Unit N/A