Hamilton Sundstrand, a subsidiary of United Technologies Corporation, is among the largest global suppliers of technologicall ... y advanced aerospace and industrial products and is headquartered in Windsor Locks, Connecticut, U.S.A. Our company designs and manufactures aerospace systems for commercial, regional, corporate and military aircraft, and is a major supplier for international space programs. Industrial products serve industries ranging from hydrocarbon, chemical and food processing to construction and mining. Hamilton Sundstrand's Aerospace business units provide technologically advanced systems, components and services for the commercial and military aerospace, and related industries. Hamilton Sundstrand Industrial consists of three separate companies: Milton Roy, Sullair, Sundyne. United Technologies, based in Hartford, Connecticut, provides a broad range of high-technology products and support services to the building systems and aerospace industries. UTC's other business units are Carrier Corporation , Otis Elevator Company, Pratt & Whitney, Sikorsky Aircraft, UTC Fire & Security and UTC Power. read more