In operation for more than 150 years, Otis Elevator Company is a manufacturer and maintainer of elevators, escalators and moving walkways. The company employs over 63,000 people and offers products and services in nearly 200 countries. It serves architects, contractors, developers and homeowners. Otis Elevator Company also offers installation services. The company provides holeless, holed and roped hydraulic products. It has a service center that maintains parts inventory. The company operates manufacturing facilities in the United States, Europe and Asia. It is affiliated with Unitec, which provides replacement parts for a range of manufacturers. The company is a part of United Technologies Corporation, which is based in Hartford, Conn., and is a diversified company that provides high technology products and services for the building and aerospace industries. Headquartered in Farmington, Conn., Otis Elevator Company maintains a location in Lombard, Ill.