Ningbo Zhenghai Yongding Fastener Co., Ltd., established in 2002 and named as Ningbo Zhenhai Ningding High Strength Fastening before 2008, is specialized in production of high strength bolt and thread rod. The company located at Jiulonghu, Zhenhai, Ningbo and covers an area of 7880 square meters with 6000 square meters construction area. 
The company mainly manufacture hex bolt,thread rod, stud double-ended and other some nonstandard fasteners under the different standards of GB, ANSI, DIN, BS, JIS, AS and ISO, grade of 6.8, 8.8, 10.9, 12.9, B7, B7M, L7, L7M. Our producing range: diameter: M12-M100; Length: 25-1200MM(Bolt) and...