Surface treatment Aluminum curtain wall veneer surface generally chromized and then adopting fluorocarbon spraying treatment. Fluorocarbon Coatings and varnishes of polyvinylidene fluoride resin (KANAR500) generally divided into two three or four coating. Fluorocarbon coating has excellent corrosion resistance and weatherability resistant to acid rain salt fog and a variety of air pollutants excellent heat and cold resistance can resist strong ultraviolet radiation can be kept for a long-term to maintain non-fading no pulverization and long lasting. Our factory selects the worldwide best -known high quality fluorocarbon coating manufacturers such as PPG DNT AKZO NIPPON. Customers can choose wide color directly provided by the manufacturers or customized.