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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 8485-2008 |
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 |
China National Standards graduation sound |
 English PDF |
| GB/T 16731-1997 |
The graduation of sound absorption propertyfor absorbent products 建筑吸声产品的吸声性能分级 |
China National Standards graduation sound |
English PDF |
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