Car headlights lampshade materials usually include the following:

1. Polycarbonate (PC): Polycarbonate is a commonly used material for car headlights lampshade, which has high light transmittance, heat resistance and weather resistance, can effectively resist ultraviolet rays and high temperatures, and maintains good light transmittance and appearance stability.

2. Acrylonitrile Butadiene Styrene Copolymer (ABS): ABS is a common engineering plastic, which is often used in the manufacture of car headlights lampshades. It has good impact resistance, heat resistance and weather resistance, and can maintain stability in harsh environment.

3. Polystyrene (PS): Polystyrene is a kind of transparent plastic, which is often used to make car headlights lampshades. It has good light transmittance and processability, but compared with other materials, it has poor heat resistance and weather resistance.

4. Polymethyl methacrylate (PMMA): PMMA is a high-quality transparent plastic, which is often used in the manufacture of high-end car headlights lampshades. It has high light transmittance, heat resistance and weather resistance, and can provide excellent lighting effect and appearance texture.

5. Glass: Some car headlights lampshades are made of glass, which has excellent light transmittance and heat resistance, but is relatively heavy and fragile, and needs special design and treatment to ensure safety.

To sum up, the materials of car headlights lampshade mainly include polycarbonate, acrylonitrile butadiene styrene copolymer, polystyrene, polymethylmethacrylate and glass. When consumers choose car headlights lampshades, they should consider the characteristics of different materials according to their needs and budgets, and choose suitable materials to ensure that the lamps have good performance and service life.