... .Surface finish process polishing, sand blasting, heat treatment, painting, powder coating, anodizing, electroplating, mirror polishing. 8. ... 10.Advantage Good quality and strict delivery time.1. Aluminium casting, sand casting part, die casting, gravity ... Surface finish process: polishing, sand blasting, heat treatment, painting, powder coating, anodizing, electroplating, mirror polishing.5. OEM ...