| Business | Phone |
| A & C Mold Co 3870 Swenson Ave, Saint Charles 60174 | (630) 587-0177 |
| A-B Die Mold Inc 1835 Wallace Ave, Saint Charles 60174 | (630) 587-3270 |
| Artisan Tool & Die 951 State Ave B2, Saint Charles 60174 | (630) 377-5565 |
| Chicago Mold Engineering Co 615 Stetson Ave, Saint Charles 60174 | (630) 584-1311 |
| Foreman Tool & Mold Corp 3850 Swenson Ave, Saint Charles 60174 | (630) 377-6389 |
| Mako Mold Co 3820 Ohio Ave 16, Saint Charles 60174 | (630) 377-9010 |