| Business | Phone |
| Adco Circuits Inc 2868 Bond St, Rochester 48309 | (248) 853-6620 |
| Rocktron Corporation 2870 Technology Dr, Rochester 48309 | (248) 601-7625 |
| Rittner French & Assoc 150 S Elizabeth St, Rochester 48307 | (248) 651-1333 |
| Omtron Inc 1783 W Hamlin Rd, Rochester 48309 | (248) 853-6806 |
| Guedes Electronics Inc 741 Ridgewood Rd, Rochester 48306 | (248) 652-8330 |
| Pgf Technology Group 2993 Technology Dr, Rochester 48309 | (248) 852-2800 |
| Photo-Tron Corp 2158 Avon Industrial Dr, Rochester 48309 | (248) 852-5200 |