| # | Entity | Status | State |
|---|---|---|---|
| 1 | 14 220 147 935 A.J DUFF & C.E DUFF & C.L DUFF & R.S DUFF |
ABN Cancelled | WA 6391 |
| 2 | 42 993 787 880 A.C DUFF & S DUFF |
ABN Active | QLD 4343 |
| 3 | 34 552 507 053 C.T ALLEN & O.C DUFF & C EDIBAM & J.P LEWIS & E LITTON & G.K LO & G.B MCGRATH & D.J MORGAN & B.Y NG & P THYAGARAJAN & S.A WEBB & R WILKINSON & L YAW |
ABN Active | WA 6008 |
| 4 | 71 255 846 814 R.A CARROLL & B.S CLUTTER & S.D DUFF & M.S HEMING & C Nguyen & J.T SULLIVAN |
ABN Active | NSW 2261 |
| 5 | 11 974 004 652 A.V DUFF & S.J REBOLLEDO & C WALSH |
ABN Active | NSW 2757 |
| 6 | 18 829 138 877 C.E DAVIES & S.A DUFF |
ABN Active | VIC 3070 |
| 7 | 74 331 759 395 S T AND A C DUFF |
ABN Active | QLD 4870 |