Adhering for the theory of quality, services, performance and growth, we have received trusts and praises from domestic and worldwide shopper for 3 7/8″inches tricone bit factory, DIN BUTTERFLY VALVE, rotating head factory, water well drilling bit,tricone rock bits in stock. Since establishment within the early 1990s, now we have arrange our sale network in USA, Germany, Asia, and several Middle Eastern countries. We intention to get a good class supplier for worldwide OEM and aftermarket! The product will supply to all over the world, such as Europe, America, Australia,New Orleans, Riyadh,India, Johannesburg.We care about every steps of our services, from factory selection, product development & design, price negotiation, inspection, shipping to aftermarket. We have implemented a strict and complete quality control system, which ensures that each product can meet quality requirements of customers. Besides, all of our products have been strictly inspected before shipment. Your Success, Our Glory: Our aim is to help customers realize their goals. We are making great efforts to achieve this win-win situation and sincerely welcome you to join us.