Tianjin Xingfa screws manufacturing Co., Ltd, it has been established since 1998 and located in XiQing district Tianjin City, our company specialized in manufacturing vaious screws, including drywall screws, self-drilling screws, Chipboard screws,self tapping screws, machine screws and so on, in addition to the leading screws products, we also can manufacture other types of fasteners, for example, bolts, nuts, threaded rods, metal frame anchors, wedge anchors and DIN 571, at present, Our annual production capacity is up to 8000 tons.