Auto Stamping Parts. Making Process:Punching,stamping,bending,welding,riveting A leader & a 12 years experienced manufacturer products of WeldingAuto Seat parts2.Material - stainless steel,carbon steel,hot rolled steel , copper, iron,etc.3.Making process--Punching,stamping,bending,welding,riveting4.Surface treatment --galvanized ,copper plated , chrome plated, electroplated and so on.5.Serve type ...