Hunan Long tone Construction Machinery Co.,Ltd is a solution provider for concrete pump,our "TOPEST" series conveying pipes owned complete patents, has become the famous brand in domestic market because of the super wear resistant advantage, we are the original conveying pipes supplier of Zoomlion, Foton, XCMG, Jiuhe ...Our purpose is create value for you.Our Philosophy is focus leads to Tops.Our goal is produce the most popular concrete pump parts in the world, become the famous brand in the world of concrete pump accessories industry, and provide a complete product chain and services to satisfy customers.