| http://www.w3.org/ns/prov#value | - The company, headquartered in Chicago, plans on building a 38,323-square-foot addition to its existing 42,811-square-foot building, where the company manufactures a line of products that store, condition or transfer power for industrial users, such as hospitals and utilities.The cost of the construction is about $3.2 million, said Stephen Mark, the company's director of facilities, engineering and
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