Sulzer Chemtech AG provides products and services for separation, reaction and mixing technology. It offers mass transfer technology, including column internals, separators, trays, and design tool products; random and structured packing, and shell alliance products; and fractional and suspension crystallization, freeze concentration, and pervaporation services. The firm also provides process technology, which include distillation and absorption, liquid-liquid extraction, crystallization, membrane processes, evaporation, process plants, reaction, polymer production, pilot testing, and installation of a distillation unit services; and process services/equipment and spare parts. The company was founded in 1993 and is headquartered in Winterthur, Switzerland.