... .We have exported many years and many countries. We have passed ISO 9001 and TS16949 Engine valve kind is complete ,the quality ... two kinds of material,the good and normal, good material: INLET VALVE IS SUH3(4Cr9Si2) ; EXHAUST VALVE IS SUH35(21-4N), normal material ... PERKINS,PEUGEOT,ROVER,SUBARU,SUZUKI,VOLVO,VOLKSWAGEN AND SO ON. We have all kinds of valve techniques, entire material valves, double ...