The Avial prototypes of e-bikes, built like an Aeroplane, equipped with both mid-drive system and rear-wheel motor of 250W will be presented at the exhibition Eurobike show 2019, which will be held from September 4 to 7 in Friedrichshafen, Germany. We invite you to visit our stand UO-211, where we can discuss the advantages and disadvantages of the design of our prototypes, as well as hear your suggestions about possible improvements or collaboration. Many visitors of our website already know…