Panel cooling units properly cool down panels, which hold a concentration of electronic devices producing a lot of heat. Also, dust-proofing and dehumidifying can be simultaneously achieved by sealing the panels. These capabilities are most useful in areas with high outdoor air temperature and areas with high humidity, as well as areas where oil mist is scattered in the air. Apiste panel cooling units include, in addition to the various functions, a line up of units certified by CCC, UL, CE, and other certifications in each country.