Home / Standards / GB/T 19148.3-2009 GB/T 19148.3-2009 Active Types and dimensions of lampholders - Part 3: Prefocus lampholders 灯座的型式和尺寸 第3部分：预聚焦式灯座 Standard Type GBT ICS 29.140.10 CCS K74 Status 现行 Issue Date 2009-09-30 Implementation 2010-02-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A