| Business | Phone |
| Cec Controls Co Inc 14555 Barber Ave, Warren 48088 | (586) 779-0222 |
| Mte Controls 14228 Frazho Rd, Warren 48089 | (586) 775-8600 |
| Mazzetti & Assoc 24832 Romano St, Warren 48091 | (586) 757-7477 |
| J B Controls 3689 E 10 Mile Rd, Warren 48091 | (586) 757-4278 |