Formed in 1991, Cornerstone Controls is the result of a merger between Reams Controls and Acme Controls. It serves industries, such as chemical, energy, power, utilities, food and beverage, consumer products, mining/metals and life sciences, including others. Cornerstone Controls offers a broad array of process automation products and services in different categories that include control systems, control valves, on/off valves and valve automation, regulators and instrumentation, among others. In 2005, the company acquired Michigan I&C, an Emerson local business partner serving Michigan customers.

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