... are welcome. 3.distributorship offered 4.OEM servic mechanical expandable shaft Item Nointernal threaded shaft Materialsiron,aluminum ... galvanized,electroplating,spraying, painting and so onProcessing EquipmentsCNC machining center,CNC lathe,grinding machine,automatic lathe machine ... tester,hardness tester and so onBusiness ScopeCNC center machining,drilling,turning,grinding,tapping,mould design and ...