... coating, Anodic oxidation, Electrophoretic coating, grainy transfer.5.Aluminum extrusion process: Drilling, Cutting, Stamping, Milling.6. The product quality is high ... coating, Anodic oxidation, Electrophoretic coating, grainy transfer.5.Aluminum extrusion process: Drilling, Cutting, Stamping, Milling.6. The product quality is high ...