Home / Standards / GB/T 8485-2008 GB/T 8485-2008 Active The graduation and test for airborne sound insulating properties of windows and doors 建筑门窗空气声隔声性能分级及检测方法 Standard Type GBT ICS 91.060.50 CCS P32 Status 现行 Issue Date 2008-07-30 Implementation 2009-03-01 Responsible Dept 住房城乡建设部 Drafting Unit 住房城乡建设部