Material: shutters: special handling polyamides(nylon)+surface: Matt Aluminum Alloy Advantages and functions: 1. Anti-ultraviolet radiation and environmental material. 2. Protect decoration, leathery seat and instruments in the car from radiation and damage of the sun. 3. Fully blocks a large area of the sunshine from the windshield of a motor vehicle and prevents the temperature increasing. 4. It is a classic low-carbon (LC) products which decrease the fuel loss and emission of air conditioner in the car and also is in accordance with energy-saving, environmental guidelines. 5. The product consumes less oil or electricity which using physical method to cool the temperature of the car. 6. Protect body from harmful gas of chemical materials of vehicle decoration after firece sun exposure. 7. Different picture could be printed in the surface. 9. Protect the stuffs in the car from thieves after obstruct the view and it plays a security role. 10. Prevent you from disturbing and make a private space when you have a rest or wait in your cars Technical Data: The shutter is met excess requirements as below after specialized tests: 1. Lignt Fastness: >5 2. Tensile strength : warp:852 weft :474 3. Tear Strength : warp:8.9 weft :8.9 4. Flame Retardant Property: A-0 5. Heat insulation:Compared with the temperature outside car, temperature in car is 20¡æ less after 1.5 hour firece sun exposure. 6. Anti-UV, anti-radiation, anti-water 7. 3 to 5 years to use.