| Business | Phone |
| National Engineering Tech 14320 Firestone Blvd # 100, La Mirada 90638 | (714) 562-5725 |
| J C Engineering 14301 Alondra Blvd, La Mirada 90638 | (562) 879-1293 |
| Vistam Engineering Svc 16037 Avenida San Miguel, La Mirada 90638 | (562) 947-7870 |
| Ecs Tech Inc 14730 Beach Blvd # 102, La Mirada 90638 | (714) 994-4911 |