Nantong Yonggao Tempered Wire Manufacturer Co., Ltd. specializes in manufacturing high carbon spring steel wire, which is used for mechanical spring & mattress spring. We are located near Sutong Bridge. It's 1 hour from Shanghai by car.With over ten years' development, we now have two subsidiaries: Nantong Yonggao Steel Wire Manufacturer Co., Ltd. & Nantong Yongsheng Steel Wire Co., Ltd. Our trademarks include 'Yongxin', 'Yongsheng' & 'Yonggao'. 'Yongxin' steel wire was awarded with "National Golden Cup Prize of Metallurgy Quality", and title of "Nantong Famous Products" and "Nantong Famous Trademark". Our yearly capacity is 50000 tons and we produce wires according to standards of GB4357-89, GB1298-86, GB/T4358-95, ASTM-A227, DIN17223, EN10270-1, JIS G 3521 and JIS G 3522-91,and also according to the customers' requirements. With Best Quality, Excellent Reputation and Reasonable Price, we already export to USA, Europe, Middle East, Southeast Asia and South America , etc.You are welcome to contact us !