EXHIBIT 22.1 SUBSIDIARIES OF THE COMPANY The following is a list of the subsidiaries of Unit Instruments, Inc. The Company owns, directly or indirectly, 100% of the voting securities of each subsidiary. State of Jurisdiction Name or Incorporation - ---- ---------------- Control Systems, Inc. New Mexico Unit Foreign Sales Corporation Virgin Islands Unit Instruments Limited Ireland Unit Instruments Japan, Inc. Japan Unit Instruments, GmbH Germany Unit Instruments Korea Ltd. South Korea