technology, the optical industry, energy technology, aviation, the automotive and racing car industries and by their suppliers. http://www.hermle.de/cms/en/home/ Facts at a glance. Task Cooling units that optically [...] there are already more than 1,000 top-mounted cooling units from Pfannenberg in use, i.e. in the automotive sector, in Germany as well as in other countries. They are available in 3 sizes and 6 power levels