| Business | Phone |
| Essex Technology Group 152 Manito Ave, Oakland 7436 | (201) 405-2150 |
| Jensen Research Corp 169 Ramapo Valley Rd, Oakland 7436 | (201) 337-4000 |
| Cdr Assoc Inc 1 Ramapo Park, Oakland 7436 | (201) 337-7885 |
| Sti Computer Svc Inc 50 Mcnomee St, Oakland 7436 | (201) 337-1244 |