Tiwan Ray Fu Enterprise Co., Ltd. was founded in 1999 and specializes in all types of industrial fasteners such as screws, Self Locking Nut, bolts, nuts and washers has own wire steel factory, facilities including wire rod warehouse, spheriodizing annealing furnace, pickling surface equipment, wire drawing and screw making. And we're strict to our quality of product standard in order to make customer have good right and also provide excellent service to our customer. We guarantee we must make you satisfy with our product and service. Therefore, if you have any question about our Self Locking Nut, you can tell us. We will give you early reply. Furthermore, we look forward to searching a good business partner. If you are interested, please feel free to contact with us or you can email to us....