Exhibit 21.1 SUBSIDIARIES OF REGISTRANT The following is a list of the Corporation's subsidiaries as of June 30, 2005. The Corporation owns, directly or indirectly, 100% of the voting securities of each subsidiary, unless noted otherwise. STATE OR JURISDICTION NAME OF ORGANIZATION - ---- --------------------- Parlex Dynaflex Corporation California Parlex International Corporation United States Virgin Islands Poly-Flex Circuits, Inc.* Rhode Island Parlex (Shanghai) Circuit Co., Ltd.** Shanghai Parlex Asia Pacific Ltd. Hong Kong Poly-Flex Circuits Limited United Kingdom Parlex (Europe) Limited United Kingdom Parlex (Shanghai) Interconnect Shanghai Products, Co., Ltd. Parlex (Shanghai) Interconnect Shanghai Technologies, Ltd. Parlex Corporation Limited United Kingdom Parlex (China) Investment Limited British Virgin Islands Pacific Advanced Interconnect Hong Kong Products Ltd. - ------------------- * Effective July 15, 2005, this entity changed its corporate name to Parlex Polymer Flexible Circuits, Inc. ** 90.1% owned by Parlex Corporation 63