| Business | Phone |
| Wentzel Electric Co 3124 Pleasant View Dr, High Ridge 63049 | (636) 677-2232 |
| Electronic Systems Support Inc 4530 Schumacher Rd, High Ridge 63049 | (636) 677-0244 |
| Lindner Electric 5633 Carlton Dr, High Ridge 63049 | (636) 376-6055 |
| Marathon Electric 4869 Country Club Dr, High Ridge 63049 | (636) 677-2046 |