| Business | Phone |
| Martin Sprocket & Gear Inc 1505 Birchwood Ave, Des Plaines 60018 | (847) 298-8844 |
| Ntn Bearing Corp 76 Bradrock Dr, Des Plaines 60018 | (847) 699-8598 |
| Star Packing & Supply Co 135 Lancaster Ln, Des Plaines 60018 | (773) 792-3877 |
| Invensys 1400 E Touhy Ave, Des Plaines 60018 | (847) 824-0178 |