Home / Standards / GB/T 30922-2014 GB/T 30922-2014 Active Isobutene-isoprene rubber 异丁烯-异戊二烯橡胶(IIR) Standard Type GBT ICS 83.060 CCS G35 Status 现行 Issue Date 2014-07-08 Implementation 2014-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A