Hejian Ouman PDC Bits Co., Ltd. is a manufacturer who produce and export drill bits. We have a Export Department, which specialize in the export of various products made by ourselves including Drill bits, Drill, Pipe, tricone bits, PDF bits, Diamond drill bits, TCL bits and so on. During the twenty years, we have built good business relationships with customers abroad, such as America, Japan, Korea, Germany and so on. Thus the stable supplies, the quality as well as the flexible ways doing business can be reached.