NEW YORK, Nov. 30, 2018 (GLOBE NEWSWIRE) -- HC2 Holdings, Inc. (“HC2”) (NYSE: HCHC), a diversified holding company, announced today that its operating subsidiary DBM Global Inc. (“DBM Global”) (OTC: DBMG), a family of companies providing fully integrated structural and steel construction services, has completed its previously announced acquisition of GrayWolf Industrial, a premier specialty maintenance, repair and installation services provider.