... /or samples or designed by oursOur products have been exported to many countries,such as United States, Saudi Arabia, Europe, ... -70, A4-80. Material: 304, 316, 316L.6. International internal and external hexagon bolt with the mechanical property of Grade 4.8 ... wood screws, etc. We can also process non-standardfasteners according to drawing.Since the establishment of Jinrui, an annual production capacity ...