Home / Standards / QB/T 4541-2013 QB/T 4541-2013 Active 免焊螺口式灯头 技术要求 Standard Type QB ICS N/A CCS N/A Status Active Issue Date 2013-10-17 Implementation 2014-03-01 Centralized Committee 工业和信息化 Issuing Authority 工业和信息化