Hejian Longyue bit manufacturing Co., Ltd. is a scientific and technological enterprise specializing in the production of roller bit, drilling equipment and tools, is the leading enterprise in the production of roller bit, tricone bit, rock drill manufacturers. The company is located in the center of Beijing, Tianjin, Hebei, Shandong and Henan -- hebei River, an important petrochemical city, with convenient transportation, rich products, honest folk customs and beautiful scenery. With strong scientific research strength, the company owns a number of years engaged in the study of rock bit, design, manufacture of technical experts, the contemporary leading production equipment, including advanced professional lathe equipment, four axis linkage, five-axis linkage CNC processing center, USES the international advanced cone production technology, research and development to create a variety of rubber bearing for different strata, Metal seal bearings and high speed motor bits and other world leading roller cone bit products.