We insist on the principle of development of 'High quality, Efficiency, Sincerity and Down-to-earth working approach' to deliver you with great provider of processing for API petorlem drilling bits, 32" hole opener, pdc diamond bit, water well drilling bit,Tricone drilling bit IADC447. We sincerely welcome close friends to barter company and start cooperation with us. We hope to affix hands with mates in different industries to make a excellent future. The product will supply to all over the world, such as Europe, America, Australia,Australia, Manila,Turkey, Houston.We have been making our products for more than 20 years . Mainly do wholesale , so we have competitive price , but high quality. For the past years , we got very good feedbacks , not only because we provide good products , but also because of our good after-sale service . We are here waiting for you for your inquiry.