Quality Piston 1. ODM service 2. tolerance+-0.005mm 3. shorter delivery time 4. ISO9001 factory guarantee Product TypePrecison machining partsMaterialStainless steel, Carbon Steel, Aluminum alloy, Zinc alloy, copper, brass, titanium etc.Machining method Turning, Milling, Drilling, threading, stampling, punching etc..Surface finishPolishing, and Chrome plating, zinc plating, blackening, Nickel ...