Our company mainly produces hex bolts and hex nuts.Haiyan Xitang Town Daning Standard Factory is near Shanghai about 2hours. We enjoy convenient transportation. We have cooperated with many clients around the world, and our products have achieved international standards. We own advanced production and testing facilities, and implement the principle of Customers' satisfaction is our eternal goal. Relying on the scientific and technological progress and strict management, we now have accumulated rich experience in production, including quality control and stability of production. The bolts are classified into grade 4.8, grade 6.8, grade 8.8 and grade 10.9 and hex nuts are classified into grade 5, grade 8 and grade 10, with original color of black. We take plated zinc, hot dipped galvanized zinc and dacromet zinc as surface treatment.