... ♦ Aluminum (different grade),metal,brass ,copper3.surface treatment for prototypes painting,anodizing,electroplating,brushed,sandblasting,printing,transpartent,rubber,paint ... grinder, shower case,rice cooker and etc ♦ Toy, Game handle/controller and etc.Car model,Motorcycle model and so ... on the size and material of the products .For products with special surface treatment,like painting,silk-screen ...