Mr. Rontai Hsieh found Dragon Iron Factory Co., Ltd. in1973; it has enjoyed 25 years history. In the earlierstages, we specialized in producing carriage bolts,fasteners for auto and bike industries. In addition tocarriage bolts, hex screws and special products, we beganmanufacturing drywall screws, self-drilling screws andchipboard screws 10 years ago. In order to provide ourbuyers the total quality management and the best service,we have the complied with ISO quality assurance systemsince 1996 and have received the certification in 1997. Webelieve deeply our 25 years professional experience willguarantee the best quality and service to you. 
Taiwan