This new concept is nothing more than an LNG station with the same technical characteristics as a standard LNG station, but where all the components are installed on top of a semi-trailer and,therefore, besides dispensing with civil works and the contracting of lifting gear, it is very easy and flexible to install, since the filling unit, when moved from the semi-trailer at the place of installation, can be installed in various configurations in accordance with what is most convenient for the end customer.