Home / Standards / GB/T 21285-2007 GB/T 21285-2007 Active Tubes valves - Identification system for valves and their components 轮胎气门嘴及其零部件的标识方法 Standard Type GBT ICS 83.160.01 CCS G41 Status 现行 Issue Date 2007-12-13 Implementation 2008-06-01 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