Product size 200x200x1mm. We also offer custom sizes，Anodizing of aluminum alloy is a chemical reaction process that forms an oxide layer on the surface of the aluminum alloy. This oxide layer can provide the aluminum alloy surface with improved corrosion resistance, hardness, and electrical insulation. 1. Enhance corrosion resistance. 2. Increase hardness. 3. Improve electrical insulation. 4. Create an aesthetic effect. 5.Enhance corrosion resistance.