SÃœSS MicroTec AG is a holding company, which engages in the development, manufacture and marketing of equipment and process solutions for microstructuring applications. It operates through the following segments: Photomask Equipment, Lithography, Substrate Bonder, and Others. The Photomask Equipment segment comprises the development and production of specialized systems for the cleaning and processing of photomasks for the semiconductor industry. The Lithography segment involves the production and trade of the mask aligner, developer, and coater product lines as well as the UV projection and laser processing product lines. The Substrate Bonder segment controls the marketing of the substrate bonder product line.. The Others segment combines further activities of the firm and the non-allocable costs of its functions. The company was founded by Karl SÃ¼ss in 1949 and is headquartered Garching, Germany.