| Business | Phone |
| Ashland Automotive 900 Wilshire Dr 110, Troy 48084 | (248) 244-9120 |
| Baker Petrolite 200 E Big Beaver Rd, Troy 48083 | (248) 680-4606 |
| Solutia Inc 100 E Big Beaver Rd, Troy 48083 | (248) 740-2715 |
| Ciba Specialty Chemicals 2075 W Big Beaver Rd, Troy 48084 | (248) 637-0501 |
| Resaline Inc 384 Park Dr, Troy 48083 | (248) 689-2697 |