Founded in 1988, YUNTONGSIFANG (YTSF), is now affiliated to Tiliu Stock (603926), which is a channel and platform service supplier with full-vehicle accessories for commercial vehicles, as well as provides safe and reliable domestic light, medium and heavy truck parts for our sincere clients.

Our factory is located in Shijiazhuang city, Hebei, China and it covers an area of 140 mu. We are a professional factory to produce engine valve, we have more 11 years experience. Our factory strictly in accordance with national standards and industry production, raw materials used in high-end 21-4N, 4Cr10SiZMo valve and other special steels, with the surfacing of spray, liquid nitriding, polishing, grinding cone determined, CNC machining and other advanced processing means, the valve is widely used in the production of automobiles, motorcycles, farm machinery and small gasoline engine, good to meet the needs of users.