| Business | Phone |
| Carlson System Engineering 2368 E Enterprise Pkwy, Twinsburg 44087 | (330) 425-3281 |
| Glass Equipment Development 9040 Dutton Dr, Twinsburg 44087 | (330) 963-5401 |
| In-O-Vate Inc 11525 Ravenna Rd, Twinsburg 44087 | (216) 581-7150 |
| Schaffer Grinding Co 8470 Chamberlin Rd, Twinsburg 44087 | (330) 425-1771 |