EXHIBIT 21.01 ESSEX GROUP, INC. (MICHIGAN) SUBSIDIARIES OF THE REGISTRANT Essex Group, Inc. ....................................................... Delaware Essex International, Inc. ............................................... Delaware Essex Wire Corporation................................................... Michigan Diamond Wire & Cable Co. ................................................ Illinois US Samica Corporation.................................................... Vermont U.S. Virgin Essex Group Export Inc. ................................................. Islands Interstate Industries Holdings Inc. ..................................... Delaware Interstate Industries, Inc. ............................................. Mississippi Essex Group Mexico Inc. ................................................. Delaware Essex Group Mexico, S.A. de C.V. ........................................ Mexico SX Mauritius Holding Inc. ............................................... Mauritius