We have provided most of domestic and overseas major wind power companies, including GE, with flange bolts (DIN6914, GR 10.9) that connect towers, T-bolts as blade fasteners, cross bolts, and bolts to fasten upper generator internals. Also, we provide products that meet at least the 720-hour neutral salt spray test by using delta-tone and seal coating as a finish, the alkali tolerance and anti-corrosion coating.