... SystemMaterial Numberaluminium alloy 6005, 6060, 6061, 6063, 6082, etc.Surface Treatmentmill finish, anodized ,powder-coating, painting, electrophoresis, wood grain/ ... ) various in size, style (aluminum profile, angles, square tubes, "T" profiles, and "U" channel),5) Color depends on your requirements ... friends to come and negotiate business. aluminium display rack with beautiful smooth surface