Ningbo Joysun Bicycle Co. ,Ltd specialize in development, design and manufacture of accessories for bicycle, electronic bicycle. Joysun owns abundant technical force, a team of staff with high profession. It is equipped with advanced equipment and standard test system. Since set-up,Joysun insist on the products of high quality to bulid up its own brand “SPEED”and “URES” take the lead in passing the ISO9001:2000 International Quality System Authentication and getting the certificate of ISO4210 for our products which is issued by TUV and Intertek. The main products: MDA, RM series disc brakes and brake lever, v-brake are enjoyed a good reputation of strong brake and excellent design. The annual output is 3,000,000 sets and sold to Europe, South America, Southeast Asia, Joysun is autherized to export the goods directly. Joysun regard the quality as their life, sincerity as their tenet. We’d like to establish splendent future with your manual effort.