... control & best services 3 various materials and surface treatments Item Nosmall rack and pinion gears Materialsiron,aluminum,steel,copper,plastic,carbon steel, ... treatment,polishing,PVD/CVD coating,galvanized,electroplating,spraying, painting and so onProcessing EquipmentsCNC machining center,CNC lathe,grinding machine, ... once we receive your valued detail specification. small rack and pinion gear