| Business | Phone |
| Apex Electronics 13 Orchard # 104, Lake Forest 92630 | (949) 837-2739 |
| Audient Inc 20532 Crescent Bay Dr # 106, Lake Forest 92630 | (949) 830-9412 |
| Advanced Micro Electronics Inc 25691 Atlantic Ocean Dr, Lake Forest 92630 | (949) 830-4966 |
| U Tronics Inc 25152 Calle Busca, Lake Forest 92630 | (949) 551-2233 |