Ningbo Datian Fastener Co.,Ltd. established in 2002,it ’s a member of Chinese Fastener Association. The company mainly manufacture Hex Nut,Square Nut,Hight strength Nut,Special Nut and Bolt by different standard.The company have about 150workers, the produce ability it ’s 1200Ton per month. The produce standard include: GB, ANSI, DIN, BS, JIS, AS ,ISO and also Russian standard.