Home / Standards / GB/T 12827-2008 GB/T 12827-2008 Active Standard reference acetylene blank and standard practice for evaluation 标准参比乙炔炭黑及鉴定方法 Standard Type GBT ICS 83.040.20 CCS G49 Status 现行 Issue Date 2008-06-18 Implementation 2009-02-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A