The factory specializes in copper, steel, stainless steel, and different specifications of wing nuts made of cold punching technics, is the first manufacturer at home. Every technical index, such as: beautiful, smooth and clean appearance, without hot stress inside, and hardness, etc. has been approved by National Fastener Standardized Technical Committee, the quality of the product is superior to the similar products, and has won the favorable comment from users. In addition, the factory also specializes in nylon cage nut and m6-m10 belt bolt. The different specifications of butterfly nuts made up of high-quality copper, steel, and stainless steel all adopt cold punching craftwork, is the first manufacturer at home. Every technical index, such as: beautiful, smooth and clean appearance, without hot stress inside, and hardness, etc. has been approved by National Fastener Standardized Technical Committee, the quality of the product is superior to the similar products, and has won the favorable comment from users.