| Business | Phone |
| Intertek Testing Svc 2307 E Aurora Rd # B7, Twinsburg 44087 | (330) 405-3552 |
| Kemet Electronics Corp 2115 Presidential Pkwy, Twinsburg 44087 | (330) 963-6169 |
| Marsh Electronics Inc 2202 E Enterprise Pkwy, Twinsburg 44087 | (330) 405-3555 |
| Nec Electronics 10124 Bissell Dr, Twinsburg 44087 | (330) 963-3115 |
| Process Control Svc 8781 Gettysburg Dr, Twinsburg 44087 | (330) 487-5508 |