Established in 1939 the company includes ten different companies as Hassan Group, Şiteks Şişmanlar, Şiteks Dış Ticaret, Hassan, Haspaş, Teksis, Telasis, Catsis , Pelsan, Aksis, Merkas.
Siteks being the first company and the first manufacturer of the sector of Hassan Group has a facility on 30.000m2 closed and 40.000m2 open area in Saray, Tekirdag with sale office at Tekstilkent Business Center in Istanbul.
Siteks supplies the sector with felt for automotive, whitegoods, furniture-mattress and construction. The company degrades facility and textile trash with modern machineries. Thus the company contributes economically and saves the environment.
With new investments Siteks is one of the leading manufacturers of felt in Turkey and Europe. Siteks felt and fibers are used as bulk products in some companies of Hassan Group.