[3] Wesco International, Inc. provides electrical, industrial, communications, maintenance, repair, and operating (MRO), original equipment manufacturer (OEM) products, construction materials, and shipping.

[4] Wesco customers include commercial and industrial businesses, contractors, government agencies, institutions, telecommunications providers, and utilities.

Wesco operates ten fully automated distribution centers and 500 branches in North American and international markets.

[5] Wesco Distribution was formed in 1922 as a subsidiary of the Westinghouse Electric Corporation, a company also based in Pittsburgh.

[8] In 2005, Wesco acquired the Carlton-Bates Company, a provider of original equipment products and supply solutions[buzzword] to industrial customers.