... ) that produce all kinds of engine valves,we have motorcycle valves, diesel engine valves ,auto engine valves and so on. we ... MAZDA.BENZ,MITSUBISHI,NISSAN,OPEL,PAYKAN,PERKINS,PEUGEOT,ROVER,SUBARU,SUZUKI,VOLVO,VOLKSWAGEN AND SO ON. 4. We have ... welding , small soldering terminal pin, small soldering alloy, shaft chromium-plating , surfacing nitration treatment.Of course , we can produce engine valves ...