Home / Standards / GB/T 11071-2018 GB/T 11071-2018 Active Zone-refined germanium ingot 区熔锗锭 Standard Type GBT ICS 77.150 CCS H66 Status 现行 Issue Date 2018-12-28 Implementation 2019-07-01 Responsible Dept 国家标准委 Drafting Unit N/A