... that produce all kinds of engine valves,we have motorcycle valves, diesel engine valves ,auto engine valves and so on. we are a manufacturer ... : INLET VALVE IS SUH1(40Cr) ; EXHAUST VALVE IS SUH3(4Cr9Si2).Engine valves are suitable for TOYOTA,AUDI,BESFORD,BMW,CATERILLAR ... ,CUMMINS,DAF,DAIHATSU,DAEWOO,FORD,FIAT,HILLMAN,HINO,HONDA,HYUNDAI ...