| # | Entity | Status | State |
|---|---|---|---|
| 1 | 17 003 378 783 YOUNG CHANG ENGINEERING PTY LTD |
ABN Cancelled | NSW 2191 |
| 2 | 24 558 782 753 MANWOO CHANG M W CHANG ENGINEERING |
ABN Cancelled | NSW 2140 |
| 3 | 66 768 703 217 JOSEPH CHANG J.Chang Engineering |
ABN Active | NSW 2074 |
| 4 | 99 122 205 298 Change Parts Pty Ltd TTR Design and Engineering A division of Change Parts Pty Ltd |
ABN Active | VIC 3803 |
| 5 | 78 086 955 371 STEPHEN JOHN POSSELT CLIMATE CHANGE ENGINEERING |
ABN Active | NSW 2471 |
| 6 | 74 674 153 001 SHAUN FRANCIS Change Engine |
ABN Active | VIC 3844 |