A supply method for supplying a product , which comprises the following steps: - provision of a fleet of containers , the fleet of containers being capable of supplying a plurality of operating units , each container defining an internal volume for receiving the product in the form of particles ; - loading of the internal volume of the container with particles by means of a single filling unit for filling particles ; - transporting of the filled container to the operating unit ; in which the operating unit comprises a supply device for supplying the particles and the method comprises the following steps: - connecting of the filled container to the operating unit , the connection comprising placing the internal volume in communication with the supply device in a manner such that the particles are transferable from the internal volume to the supply device ; - storing the particles in the internal volume of the container connected to the operating unit ; - transferring the particles stored in the internal volume of the connected container to the supply device and consuming the transferred particles by the operating unit ; in which the operating unit draws the quantity of particles necessary for its operation into the connected container ; in which the level of particles in the connected container decreases progressively in accordance with the consumption thereof by the operating unit , characterized in that a management center receiving information from the containers of the fleet , from the operating units , from the filling unit and from the transport device , and transmitting executable instructions by the filling unit and the transport device . - provision of a fleet of containers , the fleet of containers being capable of supplying a plurality of operating units , each container defining an internal volume for receiving the product in the form of particles ; - loading of the internal volume of the container with particles by means of a single filling unit for filling particles ; - transporting of the filled container to the operating unit ; in which the operating unit comprises a supply device for supplying the particles and the method comprises the following steps: - connecting of the filled container to the operating unit , the connection comprising placing the internal volume in communication with the supply device in a manner such that the particles are transferable from the internal volume to the supply device ; - storing the particles in the internal volume of the container connected to the operating unit ; - transferring the particles stored in the internal volume of the connected container to the supply device and consuming the transferred particles by the operating unit ; in which the operating unit draws the quantity of particles necessary for its operation into the connected container ; in which the level of particles in the connected container decreases progressively in accordance with the consumption thereof by the operating unit , characterized in that a management center receiving information from the containers of the fleet , from the operating units , from the filling unit and from the transport device , and transmitting executable instructions by the filling unit and the transport device . in which the operating unit draws the quantity of particles necessary for its operation into the connected container ; in which the level of particles in the connected container decreases progressively in accordance with the consumption thereof by the operating unit , characterized in that a management center receiving information from the containers of the fleet , from the operating units , from the filling unit and from the transport device , and transmitting executable instructions by the filling unit and the transport device . <EOS>