Jiaxing Jinnaike Hardware Products Co., Ltd is a leading China Double Bearings Spring Box for Roller Shutter manufacturers and Double Bearings Spring Box for Roller Shutter suppliers,our company has become the leading producer of this industry in China.We are backed by powerful technology and production,technical team, welltrained production staffs, aggressive management and sales team who has shown dedicated performance standards and made us experienced supplier to the international frontiers.To maximize market opportunity and meet the customers’ demands, we continually expand the Double Bearings Spring Box for Roller Shutter with more specifications and varieties.