Home / Standards / GB/T 4989-2013 GB/T 4989-2013 Active Extension and compensating cables for thermocouples 热电偶用补偿导线 Standard Type GBT ICS 17.200.20 CCS N11 Status 现行 Issue Date 2013-12-31 Implementation 2014-08-15 Responsible Dept 中国机械工业联合会 Drafting Unit N/A