HAIYAN DAZHONG NUT CO.LTD, established in 1980, specializes in manufacturing standard fasteners such as hex nuts, threaded rods, ground screws, and casting expansion pipes. They offer a wide range of sizes for cold forging and hot forging, including ANSI1229, 2H nuts, and A194.

The company is ISO9001:2000 certified, ensuring their manufacturing processes meet the highest quality standards. They can produce fasteners according to international standards and offer customization based on specific requirements or samples.

Located in Haiyan's Economic Development Zone, their facility spans 23,000 square meters and is equipped with over 150 sets of fasteners machinery. With their extensive experience and advanced manufacturing capabilities, they are dedicated to providing high-quality fasteners to meet the diverse needs of their clients.