Home / Standards / GB/T 8320-2003 GB/T 8320-2003 Abolished Copper-tungsten and silver-tungsten electrical contacts 铜钨及银钨电触头 Standard Type GBT ICS 29.100.20 CCS K14 Status 废止 Issue Date 2003-09-15 Implementation 2004-05-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A