| Business | Phone |
| Jones Medical 200 Windsor Dr A, Oak Brook 60523 | (630) 571-1980 |
| Sterigenics International Inc 2015 Spring Rd 650, Oak Brook 60523 | (630) 928-1700 |
| Taylor Precision Products 2311 W 22nd St 200, Oak Brook 60523 | (630) 954-1250 |
| United Plastics Group 1420 Kensington Rd 209, Oak Brook 60523 | (630) 706-5500 |