The Hydrogen Smart Fueller (HSF) is a stand alone unit that has refuelled all kind of vehicles from small fork lifts to wheel loader. It was the first product of EDC and has received several changes like the upgrade from single to dual dispenser in 2025. The most common use at the moment is bus refuelling for public transport. It can be adapted to industrial use for fork lift refuelling on the roof of ware houses. This experience can be used for UAVs as well. Currently a custom made solution is being commissioned for train refuelling. The dimension of the pipe has increased from 3/8'' to 9/16'' for this application. The latest update is a new desgin that will be shown for the first time in Hamburg.