GT Advanced Technologies Inc. provides crystal growth equipment and solutions for the solar, light emitting diode (LED), and electronics industries worldwide. The company operates through three segments: Polysilicon; Photovoltaic (PV); and Sapphire. The Polysilicon segment offers silicon deposition reactors; equipment, technology, and engineering services for the production and purification of trichlorosilane and silane; and engineering services. This segment also provides ancillary equipment and technologies for producing seed rods; and developing a technology to break up larger polysilicon pieces in precisely-sized nuggets. The PV segment engages in the development, manufacture, and sale of crystallization growth furnaces to produce silicon ingots used in the production of solar wafers. This segment offers directional solidification system (DSS) multicrystalline and MonoCast casting furnaces; ancillary equipment, such as crucible coating stations, crucible manipulators, loaders/unloaders, extraction tools, and other material handling systems; Acuity performance software, a DSS furnace performance monitoring software product; and PV parts and services. The Sapphire segment provides sapphire crystallization furnace systems used to crystallize sapphire boules; and sapphire materials consisting of heat exchanger method and titanium-doped sapphires for use in the LED and other markets, such as the aerospace, defense, and medical device. GT Advanced Technologies Inc. sells its equipment and services to polysilicon producers, solar wafer manufacturers, and sapphire producers through direct sales force and indirect sales representatives. The company was formerly known as GT Solar International, Inc. and changed its name to GT Advanced Technologies Inc. in August 2011. GT Advanced Technologies Inc. was founded in 1994 and is headquartered in Merrimack, New Hampshire.

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