Osman Sait Günteki, Chairperson of the Board of Directors of Ece Fermuar, which is in the top three among the apparel sub-industry zipper manufacturers in Turkey, has been operating in the sector since 1980. Having established Ece Fermuar San. ve Tic. A.Ş. in 1990, Güntekin has been the chairperson of the board of directors since then.
Having worked at many professional non-governmental organizations and serving in the Board of Directors of the Fashion and Ready-to-Wear Federation (MHGF) since 2012, he has taken part in the foundation of the Apparel Sub-Industrialists Association (KYSD) in 1995 and later in its management for many terms. Güntekin, who is also one of the founders of the Ready-made Clothing Export Development Association (HİGE-DER), which was established in 2018, still serves as the Vice President of the Association.