Aluminum profiles are coated with different materials to protect them from corrosion and enhance their appearance. Some common coatings include: anodizing, which creates a hard, corrosion-resistant oxide layer on the surface; powder coating, a durable and versatile method that provides a wide range of colors and finishes; electrophoretic coating (E-coating), which offers a smooth, even coating for corrosion resistance; and thermal spraying, which applies a protective layer through a high-velocity flame process. Each coating serves a specific purpose, such as improving durability, resistance to UV rays, or simply for aesthetic reasons.