Different doors and windows have different application scopes. Some brush or sheet seals are nailed to the door and window joints and can only be used for wooden doors and windows. For the bottom of the door, use brush or rubber seals For good; and the sealing paste and metal have good adhesion performance, can be cured within 24 to 28 hours, its thickness can be adjusted according to the actual needs of the site, suitable for metal doors and windows; some self-adhesive foam plastic sealing strip The pressure sealing method is suitable for windows made of different materials, and its thickness should match the width of the gap between the doors and windows; as for the brush-shaped or plastic sealing strip embedded in the groove, it must be matched with the door and window notch.