The invention relates to a spraying module for spraying the outer surface of a rotating cylinder or roller, for example, a printing cylinder of a rotary printing press, with a liquid mist by means of spray nozzles, wherein the spray direction of the spray nozzle lies in a range, relative to the horizontal, for a spray jet directional angle gamma of 30\xb0 to 150\xb0. The nitrogen containing compounds may be formulated alone, or optionally in a bait or in combination with other compounds effective for controlling or marking subterranean termites. The remote code is transmitted to the computer. Alternatively, memory tags may be applied to a printed print medium. According to the method of the present invention, since the magnetic field having the periodic directionality is used, the aging of the plating solution may be prevented and the ionic concentration thereof may be made uniform even without the use of an external liquid flow device, and as well, the substrate may be uniformly plated.