Handan Double Blue Fastener Manufacturing Co., Ltd. is a professional manufacturer of fasteners enterprises. Since its establishment, the company has been focusing on the production and R&D of drilling screw&wedge anchor&wood screws, which has built a modern, high standard, scale, variety of professional production line of drill tail screw. All used equipment are imported from Germany, Japan and Taiwan, with an annual output of high quality, multi-variety drill tail screw .