Home / Standards / GB/T 3137-2020 GB/T 3137-2020 Active Testing method for electrical property of tantalum powder 钽粉电性能试验方法 Standard Type GBT ICS 77.040.99 CCS H14 Status 现行 Issue Date 2020-03-06 Implementation 2021-02-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A