Aetna Plywood was founded in 1930. It is one of the largest distributors of wood, wood panels, laminate and woodworking hardware in the Midwest. Aetna s customers range from Fortune 500 companies to small specialty shops. Some of its clients include O'Hare Airport, RCA Hoosier Dome, Empress Riverboat Casino and Water Tower Place. It has distribution centers in Chicago, Rockford, Ill., and Indianapolis and Jeffersonville, Ind.