| Business | Phone |
| Meyer Mohaddes Assoc Inc 400 Oceangate # 480, Long Beach 90802 | (562) 432-8484 |
| Cybernet Engineering 3780 Kilroy Airport Way, Long Beach 90806 | (562) 490-7540 |
| Conceptual Designs 5318 E 2nd St, Long Beach 90803 | (562) 433-9695 |
| International Aero Engineering 3780 Kilroy Airport Way, Long Beach 90806 | (562) 494-7500 |
| K W Engineering 3730 E Broadway, Long Beach 90803 | (562) 439-1600 |
| Field & Test Engineering Inc 5175 E Pacific Coast Hwy, Long Beach 90804 | (562) 494-4415 |
| Omega Power Engineering 1811 Fanwood Ave, Long Beach 90815 | (858) 756-6905 |
| Samsco Engineering Long Beach 90804 | (562) 494-4882 |