Home / Standards / GB/T 1631-2008 GB/T 1631-2008 Active Designation system and basis for specifications of ion exchange resins 离子交换树脂命名系统和基本规范 Standard Type GBT ICS 83.080.01 CCS G31 Status 现行 Issue Date 2008-06-30 Implementation 2009-02-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A