Sound insulation performance: up to 35 decibels, the ambient noise of residential buildings facing the street is usually above 70 decibels, and the sound insulation performance of doors and windows up to 35 decibels will create a more comfortable living space.

Anti-wind pressure performance: better anti-wind pressure and sealing effect completely eliminate the vibration and whistle phenomenon of doors and windows.

Watertightness: Strict waterproof design improves the watertightness of doors and windows by 2 times, preventing water intrusion in windy and rainy days.

Airtightness: In recent years, there has been severe smog in cities, and PM2.5 pollution has attracted the attention of high-end people. A 5-fold increase in sealing performance can better isolate outdoor pollution.

Temperature resistance: from -40 ℃ to 90 ℃, there is no obvious change in sealing performance.