| Business | Phone |
| Mega Western Sales Inc 16200 S Maple Ave, Gardena 90248 | (310) 323-7900 |
| S B Tech 13724 Harvard Pl, Gardena 90249 | (310) 965-0071 |
| Columbia Manufacturing Corp 13210 S Normandie Ave, Gardena 90249 | (310) 324-1833 |
| Pmi Audio Group 1845 W 169th St, Gardena 90247 | (310) 323-9050 |