History GONKA, established as a limited company in 1986 in Ostim, Ankara, has become one of the leading firms in Heating - Cooling - Air Conditioning - Ventilating Installation, with the high performance and disciplined working mentality of Halil GONCU (Mechanical engineer, BS MS ITU, 1975) and Salih KADAYIFCIOGLU (Mechanical Engineer, BS GU, 1982) within more than 20 years for both manufacturing and contracting.GONKA Company, has been continuing its activities, in its factory located in Sincan Organized Industrial Area, since 1996. GONKA manufactures its products related to Heating - Cooling - Air Conditioning - Ventilating Installation in its factory in an area of 10.000 m2 and equipped with the latest technology.GONKA, which is continuing its activities through its technical and managerial staff in its modern Directorate General Building in Cetin Emec Boulevard, Ankara which it has moved in 2002, has been replaced "GONKA Air Conditioning Installation Construction and Trade Joint-Stock Company" by transforming into "joint-stock company" in 2003.GONKA enforces its activity in Turkey By serving through its network consisted of Istanbul and Ankara Region Offices and maintenance-repair services firms. In regions other than these, GONKA offers contact and service through local offices and central maintenance-repair crews.GONKA; has KnowHow, especially about the field of "Clean Room" technology, which requires sterility in operating theatres and air conditioning-ventilating systems of environments such as operas, theatres, auditorium buildings, television studios which require silence.GONKA has created "model company" profile in air conditioning sector through both manufacturing or supply of devices and its disciplined approach in mechanical operations by succeeding a lot of projects within last 20 years. GONKA, which has focused on internto 32 countries and succeeded many projects in Middle-East, Asia and Africa countries by its powerful foreign trade departmentational projects in last 5 years, gave representations