What are the surface treatments for aluminum profiles? What is its function?

Common surface treatments for industrial aluminum profiles include anodizing, spraying, sanding, electrophoresis, electroplating, scratching, embossing, polishing, and so on. The specific effects of different surface treatments are also different. But there is one thing in common, which is coating the surface of industrial aluminum profiles to increase corrosion and oxidation resistance, and enhance aesthetics.