Home / Standards / GB 17935 GB 17935 Abolished Edison screw lampholders 螺口灯座 Standard Type GB ICS 29.140.10 CCS K74 Status 废止 Issue Date 1999-12-30 Implementation 2000-08-01 Responsible Dept 中国轻工业联合会 Drafting Unit 中国轻工业联合会