Metal stamping part 1.Material:Aluminium 2.Technique:stamping 3.Finish:oxidation,sand ... ,welding,progression die,grinding,riveting,etc.2.Material: stainless steel, brass, copper, aluminum, iron(SGCC,SPCC,SECC),etc.3.Surface treatment ... ,Please feel free to let me know.Welcome!! Metal stamping part(OEM service)