Hebei Crossing Drill Bit Manufacture CO.,LTD is a professional supplier of drilling tools. With years of study and refining of the introduced technology, we have succeeded in the field of product research with proprietary intellectual property rights. Also, we have made major breakthrough in the lines of analogue simulation in bottom-hole flow field, profile optimization, design of inserts arrangement and low torque, material and manufacturing techniques etc. As a result, our products own better characters of service and ranges of application.