Li Jia Rubber Products Co., Ltd. to develop energy-efficient doors and windows sealed aluminum plays a critical role in the wooden doors, security doors, sliding doors, aluminum doors and windows, and other various doors and windows. Sound of the collision, on the edge of the leaf play a protective role, and extend the most obvious is the shock, after the door stop line installed it on mitigation (or even disappear) the closed (window) when the door of life and reduce the noise. Second is sealed, shock absorption, isolated indoor and outdoor air, effectively acts as a thermal insulation, energy-saving effect, but will prevent mosquitoes and other small insects drill indoors.