Home / Standards / GB/T 39429-2020 GB/T 39429-2020 Active Non-destructive testing—Method for thermoelectric sorting of electrically conductive materials 无损检测 导电材料热电势分选方法 Standard Type GBT ICS 19.100 CCS J04 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 国家标准委 Drafting Unit N/A