Home / Standards / GB/T 5238-2019 GB/T 5238-2019 Active Monocrystalline germanium and monocrystalline germanium slices 锗单晶和锗单晶片 Standard Type GBT ICS 29.045 CCS H82 Status 现行 Issue Date 2019-06-04 Implementation 2020-05-01 Responsible Dept 国家标准委 Drafting Unit N/A