Ike hydrogen maka nnyefe drones: Wingcopter na ZAL GmbH na-amalite mmepe nkwonkwo
Machị 16, 2023, Weiterstadt/Hamburg, Germany - Wingcopter, onye nrụpụta German na onye na-ahụ maka nnyefe drones, yana Hamburg nke ZAL Center nke Applied Aeronautical Research GmbH ekwupụtala mmekorita mmepe.