| Business | Phone |
| Racaar Circuit Industries 9225 Alabama Ave # F, Chatsworth 91311 | (818) 998-7566 |
| Ambitech Inc 8943 Oso Ave, Chatsworth 91311 | (818) 773-7510 |
| Comtech Engineering 9614 Cozycroft Ave, Chatsworth 91311 | (818) 709-4787 |
| Dh Wagner & Assoc 10944 Cozycroft Ave, Chatsworth 91311 | (818) 349-1613 |
| Electropath Inc 10137 Canoga Ave, Chatsworth 91311 | (818) 882-1510 |
| Sermo Maintenance 9625 Cozycroft Ave, Chatsworth 91311 | (818) 341-4048 |