The installation of 30 Otis escalators is now underway at three underground stations of the Thessaloniki Metro’s Main Line. Otis, which operates in Greece as C. Veremis-Otis S.A., is the world’s largest manufacturer and maintainer of people-moving products, including elevators, escalators and moving walkways, Elevator Design and is a part of UTC Building & Industrial Systems, a unit of United Technologies Corp. (NYSE: UTX).