The door and window sealing tops are made of high-quality atactic polypropylene as raw materials, synthesized with siliconized polypropylene fibers and polypropylene film, and have unique product designs. And passed the national building materials testing center testing qualified, is applied to doors, windows, furniture, vacuum cleaners and other sealed high-end products. The so-called siliconized wool top is made of propylene as a raw material, treated with silicon oil, and then knitted into different base fabric wool strips, then overlaid with polypropylene to form a sheet, and cut according to the required specifications. . The non-siliconized tops are strips of various types of strips of warp knitted with different sizes of trim wires. They are then overlaid with polypropylene to form a substrate and cut into the desired size of tops. Domestic roof and window tops are usually made of siliconized and non-silicone, and they are used on colorboard doors and windows, aluminum alloy doors and windows, and plastic doors and windows.