Henry L. Hirvela has been named vice chairman of Three-Five Systems Inc., (TFS) a Tempe, Ariz., provider of electronics manufacturing services and display technology to original equipment manufacturers (OEMs). Hirvela, a member of the TFS board of directors and chair of its audit committe, will succeed David Malmberg when he retires as chairman in January. TFS also announced it has acquired the business and certain assets of Unico Technology Bhd., a private company based in Penang, Malaysia. 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