GUADALAJARA, Mexico, June 4 /PRNewswire-FirstCall/ -- Grupo Simec, S.A.B. de C.V. ("Simec"), announces the closing of the acquisition of all of the shares representing the capital stock of Corporacion Aceros DM, S.A. de C.V. and certain affiliates (Grupo San). The acquisition was announced on February 22, 2008.