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In the automotive industry, a variety of plastic materials are widely used due to their unique properties. Here are some of the most used plastic materials in automobiles:

Polypropylene (PP): Polypropylene is widely used in automotive interior parts such as dashboards, door panels, seats and trunk linings due to its good impact resistance, heat resistance and cost-effectiveness.

Polyethylene (PE): Polyethylene has good chemical stability and corrosion resistance and is often used in fuel tanks, fenders and certain types of bumpers.

Polyvinyl chloride (PVC): PVC is mainly used in automotive interior skins, weatherstrips and cable insulation due to its good flexibility and durability.

ABS (Acrylonitrile-Butadiene-Styrene): ABS is a hard, impact-resistant and easy-to-form plastic that is often used to manufacture automotive exterior parts, interior parts and dashboards.

Polyamide (PA, Nylon): Polyamide is used to manufacture under-the-hood parts such as fuel lines, gears and bearings due to its high strength and good wear resistance.

Polycarbonate (PC): Polycarbonate has excellent transparency and impact resistance and is often used to manufacture headlight lenses, sunroofs and glass substitutes.

Polyurethane (PU): Polyurethane foam is used for seat padding and interior cushioning, while rigid polyurethane is used to make body structural parts and bumpers.

Thermoplastic polyurethane (TPU): TPU is used to make automotive seals, hoses and dust covers because of its good elasticity and wear resistance.

Polymethyl methacrylate (PMMA): PMMA, also known as acrylic, is often used in automotive taillights and indicator lights due to its good transparency and weather resistance.

Composite materials: including carbon fiber reinforced plastics (CFRP) and glass fiber reinforced plastics (GFRP), which are increasingly used in automotive structural parts such as body panels, chassis and suspension systems due to their high strength and lightweight properties.

The application of these plastic materials is not limited to the above uses. With the advancement of materials science, new plastic materials and composite materials are constantly being developed to meet the automotive industry's higher requirements for performance, safety and sustainability.