Estonian Oil Service Ltd. (AS E.O.S.) is a midstream company engaged in oil storage. The company is considered as the biggest heavy fuel oil terminal in the Baltic Sea region. AS E.O.S. operates through its fully-owned terminals: EOS-Termoil terminal and EOS-Trendgate terminal. E.O.S. transfer heavy fuel oils and crude oil of Russian and Byelorussian origin to Europe, the Mediterranean, Canada, North and South America, the Caribbean and Asia. Total storage capacity of the two terminals is about 415 000 metric tons and both of them are located near Maardu railway station, adjacent to the main railway line from Russia and close to the Port of Muuga. The volume of oil products stored in the year 2007 by the company is 13.69 million tons. The company is headquartered at Tallinn, Estonia.