Headquartered in Washington, West Sussex, United Kingdom Thermco Systems (www.thermcosystems.com) a Division of Tetreon Techn ... ologies, is the world’s most trusted brand name in horizontal diffusion furnaces with over 30,000 furnaces sold since the company’s founding in 1962. Thermco designs and manufactures furnace systems, Epitaxial reactors, custom wet benches and chemical handling equipment for the semiconductor, MEMS, LED, photovoltaic and nanotechnology industries. read more