Home / Standards / GB/T 40381-2021 GB/T 40381-2021 Active Specification of sapphire plate for laser window 激光窗口用蓝宝石晶体板状材料规范 Standard Type GBT ICS 71.060.20 CCS Q65 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A