From the design stage, experience and specific competence are necessary both to select the materials, which must be sturdy and durable, and to create shapes and paths for the intaken air, which must have the ideal profile to streamline the yield of the device. The same is valid during the moulding stage, where the process has to be carried out in a careful and professional way.
Research on the materials
Unsuitable, low-quality, too cheap plastic materials lead to finished products that are fragile, prone to cracks and damages, and having a poor duration because thermal expansion irremediably compromises their sealing. For Davy, the chemical analysis of the materials being used has always been a fundamental stage.