| Business | Phone |
| Interim Occupational Health 43494 Woodward Ave 204, Bloomfield Hills 48302 | (248) 334-8855 |
| Arrowhead Resources Corp 100 W Long Lake Rd, Bloomfield Hills 48304 | (248) 988-4500 |
| Tac Worldwide Co 2600 S Telegraph Rd # 170, Bloomfield Hills 48302 | (248) 745-9797 |
| Royal & Co 2507 Aspen Ln, Bloomfield Hills 48302 | (248) 745-8453 |
| Douma Technical Resources 1020 Dowling Rd, Bloomfield Hills 48304 | (248) 647-4497 |
| Sentech Engineering Svc 36400 Woodward Ave, Bloomfield Hills 48304 | (248) 645-1800 |