| Business | Phone |
| Alternative Electronics Inc 4861 W Rosecrans Ave, Hawthorne 90250 | (310) 644-7780 |
| Eroc Communications 11921 Inglewood Ave, Hawthorne 90250 | (310) 219-0719 |
| Replacement Communications 3300 W Rosecrans Ave # 203, Hawthorne 90250 | (310) 679-3784 |
| Page Kit Communications 15012 Prairie Ave, Hawthorne 90250 | (310) 970-1217 |