Mr. H. Ayduk Koray, the founder of our Group of Companies, after graduating from Istanbul Technical University, Faculty of Construction in 1950, started his career by establishing a company in his own name. He developed various industrial facilities and prestige buildings with an understanding in accordance with contemporary art and construction concepts, specializing especially in the application of exposed concrete, and gained well-deserved appreciation in a short time. This company, which continued its activities successfully until the end of 1975, transformed into a joint stock company in line with administrative and technical needs.