... motorCertification: CEFrame Material: SteelFoldable: NoMax Speed: 30-50km/hRange per Power: 31 - 60 kmPlace of Origin: Guangdong,Website:http://www.ebikesfactory ... ,can replace new parts for free.3: Speedhandle,brake handle,power lock,display,converter,horn,flasher,alarm, failure within three months because ...