| Business | Phone |
| Eta Systems 1532 Enterprise Pkwy, Twinsburg 44087 | (330) 425-3388 |
| G V I 1470 Enterprise Pkwy, Twinsburg 44087 | (330) 963-4086 |
| Independence Medical 1810 Summit Commerce Park, Twinsburg 44087 | (330) 963-7208 |
| Med Inc 1700 Highland Rd, Twinsburg 44087 | (330) 425-8352 |
| National Biological Corp 1532 Enterprise Pkwy, Twinsburg 44087 | (330) 425-3535 |
| Physician Sales & Svc Inc 2003 Case Pkwy # 3, Twinsburg 44087 | (330) 425-3832 |
| Trionix Research Lab 8037 Bavaria Rd, Twinsburg 44087 | (330) 425-9055 |