... ,copper and etc. We are an ISO certified manufacturer of metal CNC machining products parts, turning, milling, forging and stamping parts in China ... - 3 weeksSpecificationsMachining work Material: Invar,steel, stainless steel, aluminum, brass, alloy... Finish: heat treated, oxided, plated, blastedServiceMachining workMaterialsteel, stainless steel, Invar ...