| # | Entity | Status | State |
|---|---|---|---|
| 1 | 91 001 380 301 Q-ENGINEERING SERVICES PTY LTD |
ABN Cancelled | NSW 2100 |
| 2 | 92 793 798 019 T Q ENGINEERING SERVICE TRUST |
ABN Active | NSW 2177 |
| 3 | 26 370 457 038 GEORGE ADAMS ENGINEERING & Q A SERVICES |
ABN Cancelled | WA 6258 |
| 4 | 43 377 980 049 QUENTIN CLARK Q.J. Clark Engineering Services |
ABN Cancelled | WA 6164 |
| 5 | 54 142 124 773 D & H PEREIRA T Q M ENGINEERING SERVICES |
ABN Active | VIC 3175 |
| 6 | 68 167 754 932 GAVIN RAYMOND QUINTON G.Q. Engineering Services |
ABN Cancelled | QLD 4053 |