Hejian Rui Da Petroleum Materials Co.Ltd., with the convenient transportation, development economy and superior geographical position,is located in the No.106 national highway,Hebei Province. Our company will sincerely provide you excellent products and professional services because of its strict governance, latest technologies, advanced production equipment and perfect detection system. We have a capable scientific research team and staff with professional construction skills, as well as reliable production technologies. We are confident that Rui Da Co. Ltd. will occupy China's market in the near future through our consistent efforts. Our diamond bits named Rui Da, which ranging from 3"to 26".All the products have been awarded the ISO9001 certificate. Furthermore, the experienced and knowledgeable service team will ensure all the superior performance of our products in both the domestic and international market.