Home / Standards / GB/T 12970.4-2009 GB/T 12970.4-2009 Active Flexilbe copper stranded conductors for electrical purposes - Part 4: Copper wires for electric brush 电工软铜绞线 第4部分：铜电刷线 Standard Type GBT ICS 29.060.10 CCS K11 Status 现行 Issue Date 2009-03-19 Implementation 2009-12-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A