... Electric Bike with Own Exclusive Patent2. More Beautiful, more logical, more energy-saving3. Hight Efficlency In power Conversion ... demands.5. Using Dual-rachet clutch 6. Electric power supply and manual labor are totally separated ... with each other, which makes the structure of electric motor more compact7. High quality and most competitive ... , RoHs, FC, CSA, 3C, ISO9001, ISO9002 Electric Bicycle EN15194