Mark R. Stoll

ChampionX LLC provides on-site water and process chemical treatment services. Its products are used in water treatment applications to prevent corrosion, contamination and the buildup of harmful deposits, in production processes. The company was founded in 1928 and is headquartered in Naperville, IL.

Nalco Holding Co. provides water, hygiene and energy technologies and services that protects people and vital resources. The firm also provides integrated water treatment and process improvement services for industrial and institutional applications, using technologically advanced solutions, combining chemical products and equipment, and consistent, reliable on-site service and expertise. The company was founded in November 2004 and is headquartered in Naperville, IL.