The term 'Skyscraper Supplier' refers to the company Otis, which is a four-letter word. Otis is an American company that specializes in the manufacture, installation, and maintenance of elevators, escalators, moving walkways, and related products. Founded in 1853, it is the world's largest manufacturer of vertical transportation systems, with operations in more than 200 countries. Otis has been responsible for the installation of some of the world's most iconic skyscrapers, including the Empire State Building, the Petronas Towers, and the Burj Khalifa.