Our company “BOL-AY LTD. ŞTİ” has founded “DEHA ISI SİSTEMLERİ” with the leap in 2000. In a very short time, it has become the followed and imitated, the leader of the sector and the pioneer brand. Our engineering team has taken each step by relying on the scientific data and proceeds by searching for the comfortability and affordability of each design. Our team has added more knowledge to their knowledge, and more experience to their experience with the TÜBİTAK project and that is why they have reached a position that cannot be reached easily. The quality of our products has been discovered by the European countries and so they have been in demand in a very short time. Our company targeted to protect its leadership in the sector and to stay at top which is the most difficult but the best success.