... QS9000 3.Brand or OEM packing Valve role is responsible for input to the engine fuel and emissionsWe are the ... ; EXHAUST VALVE IS SUH3(4Cr9Si2).Engine valves are suitable for TOYOTA,AUDI,BESFORD,BMW,CATERILLAR,CUMMINS,DAF,DAIHATSU,DAEWOO,FORD ... , entire material valves, double mttal friction welding , small soldering terminal pin, small soldering alloy, shaft chromium-plating , surfacing nitration ...