* Maintenance Free: The corrosion resistant properties remove the necessity of periodic painting or surface treatment. * Anti-corrosion:Unaffected by exposure to a wide variety of corrosive chemicals and environments, * Light weight and high strength:Reduce damage caused by accidental collisions. * Low Thermal Conductivity: Around 1/250 of aluminium, and 1/60 of steel. * Rich color: There are many colors for you to choose. * Easy to install and maintain.