| # | Entity | Status | State |
|---|---|---|---|
| 1 | 34 092 729 550 ACOUSTIC LABORATORIES AUSTRALIA PTY LTD |
ABN Active | WA 6154 |
| 2 | 47 050 100 804 ACOUSTIC RESEARCH LABORATORIES PTY. LIMITED |
ABN Active | NSW 2104 |
| 3 | 29 117 462 861 Renzo Tonin & Associates (NSW) Pty Ltd NATIONAL ACOUSTIC CALIBRATION LABORATORY |
ABN Active | NSW 2010 |
| 4 | 47 050 100 804 ACOUSTIC RESEARCH LABORATORIES PTY. LIMITED ACOUSTIC RESEARCH LABORATORIES PTY LTD |
ABN Active | NSW 2104 |
| 5 | 80 308 797 003 AUSTRALIAN HEARING SERVICES National Acoustic Laboratories |
ABN Active | NSW 2113 |