(1) Surface preparation treatment: the surface of the profile is cleaned in the way of organic chemistry or physics, and the pure matrix is exposed to facilitate the detailed and high density human oxide film. It can also obtain mirror glass or no light (matte) surface according to mechanical equipment.

(2) Anodic oxidation: after surface preparation treatment of profile, 4032 aluminum profile in a certain technical standard, the substrate surface anodic oxidation, transformed into a layer of high density, porous structure, strong adsorption AL203 film layer.

(3) hole sealing: 5082 aluminum profile will be anodized after the formation of porous structure of the oxide film pore porosity closed, so that the oxide film pollution treatment, corrosion resistance and wear resistance. The oxide film is colorless and transparent, using the strong adsorption force of the oxide film before sealing the hole, in the film hole absorption of some metal salt, can make the surface of the profile present a lot of colors other than the primary color (silver), such as: gray black, copper, orange and stainless steel plate color.