| Business | Phone |
| Aei Systems 5777 W Century Blvd, Los Angeles 90045 | (310) 216-1144 |
| Anthony L Linhardt & Assocs 10524 W Pico Blvd # 215, Los Angeles 90064 | (310) 837-6757 |
| Bonded Electric Construction 4284 Sawtelle Blvd, Los Angeles 90066 | (310) 636-1060 |
| Edward Rhee Engineering 4032 Wilshire Blvd # 304, Los Angeles 90010 | (213) 738-1190 |
| Hallis Engineering 5410 Wilshire Blvd # 303, Los Angeles 90036 | (323) 933-1068 |
| K T Industries Inc 3203 Fletcher Dr, Los Angeles 90065 | (323) 255-7143 |
| Silver Roth & Assoc Inc 511 S Fairfax Ave, Los Angeles 90036 | (323) 933-3700 |
| Steiny & Co Inc 515 S Flower St, Los Angeles 90071 | (213) 622-9588 |
| V & M Electrical Engineering 3330 Barham Blvd # 204, Los Angeles 90068 | (323) 851-9964 |
| Biabani & Assoc 1600 Sawtelle Blvd, Los Angeles 90025 | (310) 268-1665 |
| Roshanian & Assoc 6210 Wilshire Blvd # 309, Los Angeles 90048 | (323) 933-5252 |
| Sedaghat & Assoc 512 S San Vicente Blvd, Los Angeles 90048 | (323) 653-4906 |
| Blue Jay Electric 2926 S Sycamore Ave, Los Angeles 90016 | (323) 931-3347 |