A method of powder coating a workpiece in a housing having a powder coating area with a workpiece travel path and an interior wall surface sloped around at least a portion of the workpiece travel path includes moving air and powder in the powder coating area along at least a portion of the sloped interior wall surface. When each mail item is picked up from the pickup position and reaches a nip between conveyance belts, air is introduced into the negative-pressure chamber to eliminate negative pressure therein. The nano-composite film, interposed between the unbalanced line and the balanced lines, has a relative permittivity higher than that of other regions of the dielectric film. The outer leg is arranged and constructed to hook over the rim of the larger parent bag when the latter is mounted upright on the platform of a conventional motorized golf cart. If the data is present in the mobile terminal, the mobile terminal then renders the data on the mobile terminal.