Home / Standards / GB/T 9581-2011 GB/T 9581-2011 Active Oil for use in the carbon black products - Ethylene bottom 炭黑原料油 乙烯焦油 Standard Type GBT ICS 83.040.20 CCS G49 Status 现行 Issue Date 2011-12-30 Implementation 2012-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit 中国石油和化学工业联合会