Techniques are provided relating to advertising campaign optimization. The device comprises an adhesive layer and a non-adhesive backing layer, and the pharmaceutical may be provided in either or both layers. A folded edge of the resilient plate is inserted through a first mounting slot of the positioning element to firmly secure the positioning element on a computer casing. Furthermore, the said fuel rail made of plastic material with a heating system presents internal compartments configured in such a manner that the slider sliders containing slide pins of the injection mold can be easily removed, since there is no formation of negative faces.