| NORTH DAKOTA | ||
| AVI Systems | Bismarck, ND 5850 | 701-258-6360 |
| Curt's Lock and Key | Fargo, ND 58103 | 701-232-9440 |
| MVM Contracting Inc. | Fargo, ND 58104 | 701-799-0539 |
| Systems Technology Inc. | Fargo, ND 58103 | 701-235-0558 |
| Ebel Integrators | Minot, ND 58701 | 701-837-9000 |
| Northwestern Electric | Minot, ND 58701 | 701-852-0324 |