| Business | Phone |
| Accurite 25911 Belle Porte Ave, Harbor City 90710 | (310) 539-1480 |
| Aerostar Engineering & Manufacturer Co 25514 Frampton Ave, Harbor City 90710 | (310) 326-5098 |
| De Cuir Machine Inc 25520 Frampton Ave, Harbor City 90710 | (310) 539-4651 |
| Delta Engineering 25904 Senator Ave, Harbor City 90710 | (310) 257-9010 |
| Accurate Machining Co 1208 252nd St, Harbor City 90710 | (310) 325-7315 |
| Barrett Precision Machining 1420 240th St # A, Harbor City 90710 | (310) 534-0303 |
| Beanes Engineering Harbor City 90710 | (310) 530-7721 |
| California Precision Parts 25855 Frampton Ave, Harbor City 90710 | (310) 530-5607 |
| Crafturn Machining 24100 Frampton Ave, Harbor City 90710 | (310) 530-7721 |
| D S Lundgren Tool & Machine Co 25908 Senator Ave, Harbor City 90710 | (310) 530-7454 |
| Del Toro Inc 25914 Senator Ave, Harbor City 90710 | (310) 530-5080 |
| Evna Precision Co 1214 254th St, Harbor City 90710 | (310) 517-9020 |
| Maloney Engineering 25103 Petroleum Ave, Harbor City 90710 | (310) 530-5225 |
| Neil Haworth Co 25103 Vermont Ave, Harbor City 90710 | (310) 530-4484 |
| Scientiam Machine Co 25420 Frampton Ave, Harbor City 90710 | (310) 534-0611 |
| Spacetime Machine Co 1418 259th St, Harbor City 90710 | (310) 539-3032 |