| Business | Phone |
| Bodycote 515 W Apra St, Compton 90220 | (310) 604-8000 |
| California Surface Hardening 1315 S Alameda St, Compton 90220 | (310) 608-5576 |
| L & M Steel Co 3212 N Alameda St, Compton 90222 | (310) 639-4222 |
| Thermal Solutions Inc 630 W Carob St, Compton 90220 | (310) 856-1570 |