| Business | Phone |
| Katena Products Inc 4 Stewart Ct, Denville 7834 | (973) 989-1600 |
| Ampcor Technology Inc 100 Ford Rd, Denville 7834 | (973) 625-8672 |
| Biotest Diagnostic Corp 66 Ford Rd # 220, Denville 7834 | (973) 625-1300 |
| Voltronics Corp 100 Ford Rd, Denville 7834 | (973) 586-8585 |