Established in 1910, PennWell Corporation is a privately owned, business-to-business media company that provides authoritative print and online publications and exchanges, databases and information products to strategic global markets. It serves the electric power generation, wastewater, electronics, contamination control, fiber optics, communications, photonics, and oil and gas industries. PennWell Corporation publishes more than 40 business-to-business magazines and newsletters that provide technical and business information, news and analysis to key executives and industry practitioners throughout the world. It also offers a range of services for the electric power delivery, graphic art, optoelectronics, defense and security industries. Additionally, the company conducts various conferences and exhibitions. Headquartered in Tulsa, Okla., PennWell Corporation maintains a location in Houston.