Ningbo Yinzhou Sanduo Fastener Co., Ltd. was founded on September 13, 2013. Over the years, our company has accumulated rich practical experience in fastener manufacturing. In recent years, seizing opportunities to grow and expand, the company has more than 100 employees, including three senior researchers, committed to non-standard development and research, continuously improving the performance and efficiency of products.The company has always been known for 4.8 8.8 10.9 12.9 grade high-strength hexagonal bolts, GB 1228 large hexagonal bolt joins for steel structures, GB 3632 twisted steel structure joins, solder pins, floor feet, washers, and chemical anchors, and customised various variants according to customer requirements. The company has annual sales revenue of more than 100 million yuan, and has the "Golden Three Duo" brand, independent intellectual property rights and product patents, which have been recognized by customers and widely used in the market.Ningbo Yinzhou Sanduo Fastener Co., Ltd. has modern enterprise management mechanism, first-class manufacturing equipment, perfect testing equipment, high-quality scientific research personnel, high-quality follow-up service, with a high degree of professionalism to face customers.Our team has always kept pace with the times with a "satisfied users, we are satisfied." Our company has a large number of skilled personnel and experienced sales service team, which can provide users from selection to processing, and can provide professional technical support, reliable product supply and quality service.Our purpose of service: "To survive by quality, to develop by credibility!"

High-strength bolts, ordinary bolts, steel structure bolts, torque-shear bolts, nuts, footings, tie bars, anchor bolts, chemical anchor bolts, steel structure accessories, etc.