WESCO International, Inc. (NYSE: WCC), a publicly traded Fortune 500 holding company headquartered in Pittsburgh, Pennsylvania, is a leading provider of electrical, industrial, and communications maintenance, repair and operating (MRO) and original equipment manufacturers (OEM) product, construction materials, and advanced supply chain management and logistic services. 2015 annual sales were approximately $7.5 billion. The Company employs approximately 9,300 people, maintains relationships with over 25,000 suppliers, and serves over 80,000 active customers worldwide. Customers include commercial and industrial businesses, contractors, government agencies, institutions, telecommunications providers and utilities. WESCO operates nine fully automated distribution centers and approximately 500 full-service branches in North America and international markets, providing a local presence for customers and a global network to serve multi-location businesses and multi-national corporations.