1. there is a lot of rain in summer. If the sealing performance of doors and windows is poor, the rain will leak in from the window cracks. The use of door and window sealing wool can effectively prevent the infiltration of rain

2. Dustproof: many people have such experience, I closed the doors and windows, a period of time not at home, found that there will be some dust in the room, how is this going on? This is because no matter aluminum alloy doors and windows or plastic steel doors and windows, after installation, in order to maintain the push performance of doors and windows, there will be some large or small gaps. The dust enters the room through the gaps. The fluff of the door and window sealing top is extremely soft. While improving the sealing performance of the door and window, it not only does not affect the sealing performance of the door and window, but also has a good buffer effect on the sliding door and window, which can greatly improve the sliding life of the door and window.

F10 F15 F20 Often used in Peru. Energy saving and consumption reduction