| Business | Phone |
| Spencer Turbine Co 5n297 Fescue Ct, Saint Charles 60175 | (630) 365-0558 |
| Shars Industrial Supply Co 1720 Wallace Ave A, Saint Charles 60174 | (630) 443-6822 |
| Cat I Manufacturing 1860 Dean St, Saint Charles 60174 | (630) 443-1662 |
| Charlestown Power Equipment 3945 Swenson Ave, Saint Charles 60174 | (630) 513-0829 |
| Fisher Sales Corp 3805 Illinois Ave, Saint Charles 60174 | (630) 443-1289 |