Home / Standards / GB/T 3137-2007 GB/T 3137-2007 Abolished Testing method for electrical properties of tantalum powder 钽粉电性能试验方法 Standard Type GBT ICS 77.040.99 CCS H14 Status 废止 Issue Date 2007-11-23 Implementation 2008-06-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A