... metal: Aluminum,Zinc,Brass,Copper,magnesium,45# steel,stainless steel,etc. 3. Surface treatment available:Polishing,Electroplating, ... medium size plastic parts and plastic injection moulds for electrical/electronic products,industrial product,auto product,household ... Advanced equipments:precision grinder,milling machine,driller,lathe,wire cutting machine,spark machine(EDM),CNC center,full automatic ...