Our main "quality policy" is to always supply the reliable, functional, esthetic and the best quality products while protecting the image that we have created with more than 35 years of experience. Hygienic Air-conditioning for cleanrooms and air-conditioning for textile plants are the dominant areas of activity with a lot of experiences. The Company is situated in a 4.500m² building at Hadimkoy and 650m² Main Office at 4.Levent Istanbul. and employs about 70 people including 6 engineers. In addition to its activities in Turkey, Tetisan has been exporting products engineering and know-how to countries like Germany , Syria, Finland , Iran, Russia, Uzbekistan, Great Britain, Bulgaria, Turkmenistan, Poland etc. Tetisan Products are manufactured under the ISO 9001-2008 quality assurance system given by the TUV NORD of Germany.