| Business | Phone |
| U S Avionix 2433 Moreton St # A, Torrance 90505 | (310) 530-5446 |
| Trace Worldwide Corp 2707 Plaza Del Amo, Torrance 90503 | (310) 782-6963 |
| U S Avionix 3409 Airport Dr # E, Torrance 90505 | (310) 530-5446 |
| Vin'Del Aircraft 2777 Airport Dr, Torrance 90505 | (310) 530-4083 |