| Business | Phone |
| Prepainted Metals Llc 29 S Webster St, Naperville 60540 | (630) 922-8400 |
| Ram Steel Enterprises Inc 25w204 Mayflower Ave, Naperville 60540 | (630) 579-4600 |
| Ryan Herco Products Corp 1155 Frontenac Rd, Naperville 60563 | (630) 369-1141 |
| Toyal America Inc 1717 N Naper Blvd 201, Naperville 60563 | (630) 505-2160 |