Henan Drills-King Mining Technology Co., Ltd., established in 2005, is a high-tech enterprise specialized in the design, development and production of diamond tools, and providing related technologies and services for the modernization of mining and drilling industries. We produce a wide range of mining drill tools including PDC bits, PDC cutters, diamond core bits, TC bits, tricone bits, etc. They are widely used in mining, geological exploration, oil drilling and other industries. All of ...