Home / Standards / GB/T 3953-2009 GB/T 3953-2009 Abolished Round copper wire for electrical purposes 电工圆铜线 Standard Type GBT ICS 29.060.01 CCS K11 Status 废止 Issue Date 2009-03-19 Implementation 2009-12-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A