Home / Standards / GB/T 7044-2013 GB/T 7044-2013 Abolished Colour carbon black 色素炭黑 Standard Type GBT ICS 83.040.30 CCS G49 Status 废止 Issue Date 2013-12-31 Implementation 2014-09-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A