Adhering into the basic principle of quality, assistance, effectiveness and growth, we have attained trusts and praises from domestic and worldwide client for drilling rig bit manufacturer, tricone drill, 8.5" tricone bit IADC437, CHINA OEM FACTORY,GATE VALVE IN STOCK. our merchandise have superior popularity from the whole world as its competive cost and our advantage of after-sale assistance for the clients。 The product will supply to all over the world, such as Europe, America, Australia,Serbia, Barcelona,Gabon, Victoria.During the development, our company has built a well-known brand. It is well highly acclaimed by our customers. OEM and ODM are accepted. We are looking forward to customers from all over the world to join us to a wild cooperation.