Haiyan Jindu Hardware Co., Ltd was founded in 2005, which is a professional nuts manufacturer. The factory located in the northwest of Hangzhou bay bridge, around 100 kilometers away from Shanghai, Ningbo, Suzhou and Hangzhou, convenient transportation help us save shipment costs. The factory mainly produces carbon steel nuts, include hex nuts, flange nuts, heavy hex nuts, thin nuts, nylon nuts, etc, annual output is 10,000 tons.Standards involved ISO,DIN,ANSI/ASME,BS,UNI,JIS,AS and GB,etc and non-Standard parts.The products are mainly used in the fields of wind power, construction, oil field, transportation, and furniture. The nuts are sold to America, Europe, Middle East, Asia, and domestic markets.