dbo - A Whole New Cross - Generation Taiwanese e-bike manufacture DK City and American famous design company ROBRADY, solely applied self-innovated folding mechanism with American patent and specially equipped with humanized electrical power-assisted technology. dbo successfully open new vision of bikes,overthrow the traditional image, transcend your unlimited expectancy for folding bikes, and intelligently save your energy so you could just experience the fun of professional riding with pleasure. practical , convenient, innovative and ultramodern humanized technolog-one and only, divided by nothing.