... ,Aluminium alloy,Copper alloy etc.2.The sorts of the machining parts/machinery parts:Pulley,Belt pulley, ... ,Valve;Casing,Housing,Cover,Frame,Bolster;Various Stamping(metal hardware parts) Parts,Various Welding Parts and Other machining products ... .Machining facilities:CNC centres,NC machines and common machines;Various classes of punching machines & pressing machines,Automatic & Semiautomatic welding ...