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- Hallam Hi Tech Automotive Servicing Pty Ltd 2U 1/ 50 Star Crs, Hallam, VIC
- IDM Instruments Pty Ltd 310-11 Colrado Crt, Hallam, VIC
- Nexus Technologies Pty Ltd 466 Wedgewood Rd, Hallam, VIC
- Total Geotechnics 51/ 13 Keppel Drv, Hallam, VIC
- Hi-Tech Metrology Pty Ltd 62 Carl Crt, Hallam, VIC
- Integral Machinery Imports Pty Ltd 7Factory 1 18- 20 Keppel Drv, Hallam, VIC
- Obsidian Projects Pty Ltd 8Fcty 1/ 80-82 Hallam South Rd, Hallam, VIC
- ABC Specialty Metals 975 Hallam South Rd, Hallam, VIC
- T R J Engineering Pty Ltd 1017-19 Apollo Drv, Hallam, VIC
- Wends Engineering 11U1/ 49a Rimfire Drv, Hallam, VIC
- Australian Electrical Manufacturing Pty Ltd 12Fcty 15/ 17 Keppel Drv, Hallam, VIC
- Balcombe Engineering Pty Ltd 1325-26 National Dr, Hallam, VIC
- Atlas Engineers 14Fcty 2/ 28 Colrado Crt, Hallam, VIC
- AOS Engineering Pty Ltd 1524-32 Westpool Drv, Hallam, VIC
- Barac Pty Ltd 1661 Frawley Rd, Hallam, VIC
- GCS Service Management 17Fcty3/ 47-49 Melverton Drv, Hallam, VIC
- K.H. Equipment Pty Ltd 1810-16 Westpool Drv, Hallam, VIC
- M.I.G.M. Engineering Pty Ltd 19Unit 7 2- 10 Hallam South Rd, Hallam, VIC