| # | Entity | Status | State |
|---|---|---|---|
| 1 | 14 073 583 490 FITZROY CHALLENGE ENGINEERING GROUP PTY LTD |
ABN Cancelled | VIC 3150 |
| 2 | 62 008 951 791 CHALLENGE ENGINEERING (1989) PTY LTD |
ABN Cancelled | WA 6109 |
| 3 | 64 706 273 683 Great Engineering Challenge |
ABN Cancelled | NSW 2067 |
| 4 | 66 447 150 356 SCIENCE AND ENGINEERING CHALLENGE SYDNEY COMMITTEE |
ABN Active | NSW 2086 |
| 5 | 83 273 103 934 CHALLENGE ENGINEERING SUPERANNUATION FUND |
ABN Cancelled | WA 6150 |
| 6 | 46 943 895 877 DEEGAN P L & A J CHALLENGE ENGINEERING |
ABN Cancelled | QLD 4520 |
| 7 | 61 950 814 986 ROBERT HEDLEY FRITH ENGINEERING CHALLENGES |
ABN Active | QLD 4053 |
| 8 | 64 706 273 683 Great Engineering Challenge |
ABN Cancelled | NSW 2067 |
| 9 | 71 119 919 407 REPETITION ENGINEERING PTY LTD Challenge Engineering |
ABN Active | NSW 2065 |
| 10 | 71 119 919 407 REPETITION ENGINEERING PTY LTD CHALLENGE ENGINEERING |
ABN Active | NSW 2065 |