Well-run devices, expert profits group, and better after-sales companies; We have been also a unified huge family, everybody keep on with the organization worth unification, determination, tolerance for tci rock bit 15.5inches, button bit for gas drilling, rig bit IADC517, NRS RESILIENT GATE VALVE,carbide drill bit IADC537. We are looking forward to cooperating with all customers from at home and abroad. Moreover, customer satisfaction is our eternal pursuit. The product will supply to all over the world, such as Europe, America, Australia,Sri Lanka, Paraguay,Johannesburg, Pakistan.The working experience in the field has helped us forged a strong relations with customers and partners both in domestic and international market. For years, our products and solutions have been exported to more than 15 countries in the world and have been widely used by customers.