| Business | Phone |
| Contour Mold Inc 726 Quinn Ave Nw, Elk River 55330 | (763) 441-3030 |
| Otsego Tool & Engineering 13949 91st St Ne, Elk River 55330 | (763) 497-2442 |
| Protech Engineering Inc 9946 Highway 10, Elk River 55330 | (763) 274-2429 |
| Vision Mold & Engineering Inc 17242 Ulysses St Nw, Elk River 55330 | (763) 241-1983 |