| # | Entity | Status | State |
|---|---|---|---|
| 1 | 21 620 640 431 HM ENGINEERING & ASSOCIATES PTY LTD |
ABN Cancelled | QLD 4053 |
| 2 | 58 656 520 811 HM PROJECT ENGINEERING PTY LTD |
ABN Active | VIC 3672 |
| 3 | 58 680 218 160 HM PRECISION ENGINEERING PTY LTD |
ABN Active | QLD 4227 |
| 4 | 71 657 179 032 HM GEM ENGINES PTY LTD |
ABN Active | VIC 3175 |
| 5 | 79 096 062 001 HM ENGINEERING PTY. LTD. |
ABN Active | VIC 3280 |
| 6 | 68 664 066 108 The Trustee for HM GEM Business Trust HM GEM Engines |
ABN Active | VIC 3175 |
| 7 | 88 127 087 594 MAYER INTERNATIONAL MACHINES PTY LTD HM Industrial Design Engineers Machines Pty Limited |
ABN Cancelled | NSW 2065 |
| 8 | 38 151 261 755 Holy Mackerel Pty Ltd HM Industrial Engineering |
ABN Active | NSW 2526 |
| 9 | 61 576 238 392 ANGUS JAMES MUNRO HM PRECISION ENGINEERING |
ABN Active | QLD 4217 |