Hejian Ouman Mining Bits is a professional manufacturer of pdc bits, blade bits, and hole openers serving oil&natural gas, mineral exploration, coal mining, geothermal drilling and geological exploration industry. In 1990s, it started to repair various pdc bits and gradually developed in to design and produce pdc bits on its own. Besides, it is also engaged in distributing rock bit, pdc cutter and other drilling equipments. Using sophisticated machinery and cutting-edge ideas and techniques, we focus on supplying best solutions to specific customer needs. Our customers value Ouman Drilling innovative thinking, individualized approach and timely response.