Adhering into the basic principle of quality, assistance, effectiveness and growth, we have attained trusts and praises from domestic and worldwide client for TCI drilling bit IADC537 17.5″, IADC517 269mm tricone bit, single roller cone bit, steel tooth tricone bit 394mm,6.5 inches TCI bit IADC447. We sincerely welcome customers from both at home and abroad to come to negotiate business with us. The product will supply to all over the world, such as Europe, America, Australia,Saudi Arabia, Myanmar,Provence, Vietnam.If any product meed your demand, remember to feel free to contact us. We're sure your any inquiry or requirement will get prompt attention, high-quality merchandise, preferential prices and cheap freight. Sincerely welcome friends all over the world to call or come to visit, to discuss cooperation for a better future!