Demirsan Haddecilik Industry and Trade Co., Ltd was established at Dilovasi Gebze in 1977, to produce rebar. Today, we operate on an area of ​​50,000 m2, more than 300 employees and more than 500,000 tons / year production capacity of rebar and merchant bar, is one of the leading companies in the sector. The principle of quality and customer satisfaction, the company has been exporting a large part of the production.