... the price is reasonable. We have advanced management and excellent equipment.We have two kinds of material ... ,the good and normal, good material: INLET VALVE IS SUH3( ... 4Cr9Si2).our engine valves are suitable for TOYOTA,AUDI,BESFORD,BMW,CATERILLAR,CUMMINS,DAF,DAIHATSU,DAEWOO, ... ,ROVER,SUBARU,SUZUKI,VOLVO,VOLKSWAGEN AND SO ON. Volvo/AUDI Engine Vavle with best quality ...