The quality principle
Due to the continuous modernisation and automation of the production process, it was possible to increase the consistent quality of the collectors. Inspite of the increasing costs for the raw materials the prices did not change.
Confirmed by independent tests
The collectors were successfully tested in 2007 at the Institute for Solar Energy Research (ISFH) in Hameln, Germany, in accordance with ISO 12975-1/2. There exists a Solar Keymark Certificate for each collector. The ISFH is accredited at DAP or ilac-mra. In every production process, tolerances cannot be avoided. In the case of our new collectors, the influence of manufacturing tolerances has been considerable reduced by design-related amendments.
Collectors during the test procedure
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