Commonly used materials for car bumpers include:

　　1. Plastic bumpers are composed of three parts: outer panels, buffer materials and cross beams. The outer panels and buffer materials are made of plastic, and the cross beams are stamped from cold-rolled thin plates to form U-shaped grooves.

　　2. The outer panels and buffer materials are attached to the cross beams. The plastic used in this plastic bumper generally uses polyester and polypropylene materials.

　　3. In addition, there is a type of plastic called polycarbonate, which is infiltrated with alloy components and adopts the alloy injection molding method. The processed bumper not only has high strength and rigidity, but also has the advantage of being welded and has good painting performance. Well, it is used more and more in cars.

　　Currently, the most commonly used material for bumpers is modified PP. Due to the large climate temperature differences in various places, cars need to be used in different climate conditions, which requires modified PP materials to have good impact resistance, toughness, and weather resistance. Supapro car bumper materials include PP+T15, PP+T20 and PP+T12.

　　The outer panel and buffer material of the bumper are made of plastic. Repair method: Prepare fiberglass gauze, unsaturated polyester resin, curing agent, accelerator, color paste, etc. Generally, only the first two are used.