Sulzer Chemtech USA, a member of the Sulzer Corporation, which is headquartered in Winterthur, Switzerland, is active in the field of process engineering and employs approximately 1,200 people worldwide. Sulzer Chemtech is represented in several industrial countries and sets standards in the field of mass transfer with its advanced and economical solutions. Products sold by Sulzer Chemtech USA include process components, structured packing material and internals for separation columns. Engineering services sold by the company include those for separation and reaction technology such as optimizing energy consumption, plant optimization studies and pre-engineering for governmental approval. A process that Sulzer Chemtech USA excels at is the separation and purification of organic chemicals by means of crystallization and membranes. The company possesses mixing and reaction technology and static mixers. Sulzer Chemtech USA maintains locations in Pasadena, Texas, and Tulsa, Okla.