... product based on customer's design a manufacturer cnc turning and machining partDescription: OEM metal punching productMaterial: carbon steel, ... steel, steel tube, steel rod, aluminium , brass, zinc alloy and etc.Process: stamping, bending, welding, casting, punching, maching.Surface ... , zinc plated, nickel-chrome plated, painting, heat treatment and etc.Packing: packed in carton ,then on pallet.Our ...