Home / Standards / GB/T 3780.15-2006 GB/T 3780.15-2006 Abolished Carbon black―Part 15: Determination of light transmittance of toluene extract 炭黑 第15部分: 甲苯抽出物透光率的测定 Standard Type GBT ICS 83.040.20 CCS G49 Status 废止 Issue Date 2006-08-01 Implementation 2007-01-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A