| Business | Phone |
| Simone Engineering Inc 5155 E River Rd # 408, Minneapolis 55421 | (763) 566-6960 |
| William M Ruva Co 3337 Kyle Ave N, Minneapolis 55422 | (763) 287-8004 |
| Engineering Unlimited Inc 1320 12th Ave N, Minneapolis 55411 | (612) 522-4040 |
| Johnson Controls Inc 1801 67th Ave N, Minneapolis 55430 | (763) 566-7650 |
| Melena Instrument Co 3525 Chicago Ave, Minneapolis 55407 | (612) 861-6639 |
| Melena Instrument Co 5925 10th Ave S, Minneapolis 55417 | (612) 861-6639 |
| Minvalco Inc 3340 Gorham Ave, Minneapolis 55426 | (952) 920-0131 |
| Varidigm 3070 Ranchview Ln N, Minneapolis 55447 | (763) 258-0170 |
| Tempco Systems 7100 Medicine Lake Rd # 300, Minneapolis 55427 | (763) 521-3566 |
| Slicer Controls Inc 3450 Snelling Ave, Minneapolis 55406 | (612) 724-2710 |