| Business | Phone |
| Metan Corp 496 Forest Ave, Glen Ellyn 60137 | (630) 217-2003 |
| Miami Systems Of Illinois 800 Roosevelt Rd, Glen Ellyn 60137 | (630) 325-3900 |
| Orropco Industries 3s155 Cherrywood Ln, Glen Ellyn 60137 | (630) 858-9950 |
| Paper Systems 504 Pennsylvania Ave, Glen Ellyn 60137 | (630) 469-8880 |