Aluminum plates have the characteristics of being lightweight, having good thermal conductivity and electrical conductivity, moderate strength and excellent processing performance. They have good corrosion resistance, and a dense aluminum oxide film can be formed on the surface to resist oxidation. Moreover, they have strong decorativeness. After undergoing various surface treatments, they can present different colors and textures, which can meet the needs of many fields such as aerospace, electronics and power, automobile, construction and decoration.