在关闭状态，有良好的密封性以及隔热隔音性能。
In the off-position, has the good leak-proof quality as well as the heat insulation sound-insulated performance.
良好的隔音性能是保证居住舒适性的重要条件之一。
Good sound insulation is one of the most important factors to ensure comfortable living conditions.
高气密性、高水密性、高强度以及优异的隔热、防寒、隔音性能。
It has high air tightness, high water tightness, high intensity and excellent heat insulating, winter proof and sound insulating performance.
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