EXHIBIT 21.0 LISTING OF SUBSIDIARIES Amerex International, Inc., a British Virgin Island corporation Ayers, Lewis, Norris & May, Inc., a Michigan corporation Keith Energy, Inc., a California corporation TKCG, Corp., a California corporation UEI Associates, Inc., a Texas corporation UEI Global I, Inc., a Texas corporation Universal Energy do Brasil, Ltda., a Brazilian limited liability company Universal Energy, Inc., a Texas corporation