| Acoustical absorption performance test results | |||
| Test items | Method standard | Results of testing | Remarks |
| NRC | GBJ47-1983 | 0.95 | Rear Cavity:200cm Thickness:9mm Density:229kg/m3 |
| NRC | GBJ47-1983 | 0.925 | Rear Cavity:100cm Thickness:9mm Density:229kg/m3 |
| NRC | GBJ88-1985 | 0.7 | Rear Cavity:50cm Thickness:9mm Density:229kg/m3 |
| NRC | GBJ88-1985 | 0.65 | Rear Cavity:100cm Thickness:5mm Density:229kg/m3 |
| Acoustical absorption coefficient value -tanding wave tube | ||||||
| Hz | 125 | 250 | 500 | 1000 | 2000 | 4000 |
| 9mm AAC (rear cavity 50mm) | 0.09 | 0.35 | 0.74 | 0.96 | 0.75 | 0.94 |
| 9mm AAC (rear cavity 50mm) | 0.07 | 0.23 | 0.58 | 0.95 | 0.83 | 0.94 |
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