... motorcycle valves, diesel engine valves ,auto engine valves and so on. we are a manufacturer, we ... equipment.We have two kinds of material,the good and normal, good material: INLET VALVE IS SUH3(4Cr9Si2) ... ; EXHAUST VALVE IS SUH35(21-4N), normal material: INLET VALVE IS SUH1(40Cr) ; EXHAUST VALVE ... ,PAYKAN,PERKINS,PEUGEOT,ROVER,SUBARU,SUZUKI,VOLVO,VOLKSWAGEN AND SO ON. 4. We have all kinds ...