Home / Standards / GB/T 3609.2-2009 GB/T 3609.2-2009 Active Occupational eye and face protection - Welding protection - Part 2: Automatic welding filter 职业眼面部防护 焊接防护 第2部分：自动变光焊接滤光镜 Standard Type GBT ICS 13.340.20 CCS F79 Status 现行 Issue Date 2009-04-01 Implementation 2009-12-01 Responsible Dept 应急管理部 Drafting Unit N/A