Haiyan Ausin Hardware Co.,Ltd ,Its factory located in Haiyan city ,Zhejiang province . We are specialized in exporting all kinds of screws. We have strong QC team ,who is applying strict quality checking for every shipment in the factory . Inspections are performed on semifinished items, finished products and packages .We must ensure that every product is perfect without any fault. Our main product line is Self Drlling Screw , we also have sub production line for Drywall Screw, Chipboard Screw and Tapping etc.We are selling the products to South America, Middle east countries and Africa .By supplying stable quality goods with excellect trade service ,we win the confidence from different customers and have established long-term business relationship with them. Should you have any question on prices or technical details etc , please contact us freely , you will be gicen our sincere help and trade service.