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Stepan Company produces and sells specialty and intermediate chemicals to other manufacturers for use in various end products in North America, Europe, Latin America, and Asia. The company is headquartered in Northfield, Illinois.

Ecolab Inc., headquartered in St. Paul, Minnesota, is an American corporation that develops and offers services, technology and systems that specialize in water treatment, purification, cleaning and hygiene in a wide variety of applications. It helps organizations both private market as well as public treat their water, not only for drinking directly, but also for use in food, healthcare, hospitality related safety and industry.

Eastman Chemical Company is an American company primarily involved in the chemical industry. Once a subsidiary of Kodak, today it is an independent global specialty materials company that produces a broad range of advanced materials, chemicals and fibers for everyday purposes. The company is headquartered in Kingsport, Tennessee.