Founded in 1910, PennWell Corporation is a business-to-business media company that provides various print and online publications and informational products. It is a privately held company that serves several global markets, including oil and gas, electric power generation, defense, fiber optics, contamination control, information technology, communications and computer graphics. The company publishes more than 70 print and online magazines and newsletters, as well as conducts over 60 conferences and exhibitions. It offers a range of books, maps, directories and database services. Additionally, the company has publishing, licensing and conference partners in Singapore, Japan, France and Russia. PennWell Corporation is headquartered in Tulsa, Okla., and maintains locations in Nashua, N.H.; Houston; Mountain View, Calif.; and Fairlawn, N.J.