engine valve use for DAIHATSU. it's OEM NO.:13711-87701 13715-87701 13711-87201 13715-87201...and so on. Material:21-4N,or according to client's request. Surface treatment:chromed or nitrided.it's also according to client's request. The Rui'an LIWANG manufacturing CO.,LTD located at the Zhejiang Wenzhou Motor city Tangxia.We specialized are engaged in various types high difficulty automobile, the motorcycle, the general gasoline engine, series and so on diesel engine internal combustion engines enter the exhaust gate, the valve guide production and the sale.The product model is complete,may also depend on the customer to coordinata the production. We can offer various of auto engine valves LADA,VOLGE,AUDI,VW,BENZ,SKODA,OPEL,DAEWOO,TOYOTA,HYUNDAI,NISSAN,MITSUBISHI,MAZDA,MAN,KIA,FIAT,PEUGEOT,RENAULT,ISUZU,PERKINS,CUMMINS,KOMATSU,CATERPILLAR.etc