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 (10, 90) with particles by means of a single filling unit for filling particles; - transporting of the filled container (10, 92) 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 (10, 92) 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 (10, 94) to the operating unit; - transferring the particles stored in the internal volume of the connected container (10, 94) 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 (10, 94); in which the level of particles in the connected container (10, 94) 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 (10, 90) with particles by means of a single filling unit for filling particles; - transporting of the filled container (10, 92) 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 (10, 92) 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 (10, 94) to the operating unit; - transferring the particles stored in the internal volume of the connected container (10, 94) 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 (10, 94); in which the level of particles in the connected container (10, 94) 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 (10, 94); in which the level of particles in the connected container (10, 94) 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.