Mould spring 1.Tight tolerance. 2.OEM&ODM service. ... punching,threading,welding, tapping, riveting,cutting,punching,drilling,turning,milling,grinding,rolling,cold drawing, spinning, forging, etcMaterialAluminum, copper, brass ... ,industry,agricuture,etc.Machining equipmentCNC milling&turning machine, general milling&turning machine, grinding machine.File FormatSolidworks,Pro/Engineer,Auto CAD,Solid ...