Home / Standards / GB/T 690-2008 GB/T 690-2008 Active Chemical reagent - Benzene 化学试剂 苯 Standard Type GBT ICS 71.040.30 CCS G63 Status 现行 Issue Date 2008-05-15 Implementation 2008-11-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A