Tekfen 

Founded in 1956 and headquartered in Istanbul, Turkey, Tekfen Holding Anonim Sirketi, along with its various subsidiaries, conducts a wide array of business operations both within Turkey and internationally. Its core activities span engineering and construction, chemicals, agriculture, services, and investments. Through its engineering and contracting arm, the company executes diverse projects, including the construction of petrochemical facilities, pipelines, land and marine terminals, offshore platforms, tank farms, oil refineries, pumping stations, and power generation plants. This also extends to vital infrastructure like highways, subways, bridges, and tunnels, as well as electrical and instrumentation systems, manufacturing facilities, commercial and technical building complexes, and sports arenas. In the chemical and agricultural sectors, Tekfen manufactures a range of fertilizers, specifically mineral, specialized water-soluble, and organic/organomineral varieties. It also contributes to renewable energy by producing biogas and electricity from biogas sources. Additionally, its agricultural endeavors involve cultivating, distributing, and trading seedlings and saplings, alongside exporting fresh produce such as cherries, apricots, pomegranates, plums, persimmons, and figs. Furthermore, the company offers a comprehensive suite of services, encompassing terminal administration, guidance, towage, agency representation, free zone management, insurance, and the complete management of buildings and facilities.