... MACHINE .2) Material: cold-rolled sheet,stainless steel,carbonsteel ,alu alloy or alloy with various sheet3) Surface treatment: ... tapping, riveting,cutting,punching,drilling,turning,milling,grinding,rolling,cold drawing, spinning, forging, etc.MaterialAluminum, copper, brass, stainless ... also customized.SizeDifferent size, according to customer's drawing.MOQTrial order without MOQ,bulk order will be ...