EX-21 6 a4840844ex21.txt EXHIBIT 21 Exhibit 21 Subsidiaries of the Registrant ------------------------------ The following is a list of the Registrant's subsidiaries (all of which are 100% owned): State or Other Jurisdiction of Incorporation --------------------------- MATEC EFO Corp. Massachusetts Matec International, Inc. Massachusetts MEKontrol, Inc. Massachusetts MTCI, Inc. Delaware Old MAS, Inc. Delaware