| Business | Phone |
| Alpha Mchine Corp 17511 Duvan Dr, Tinley Park 60477 | (708) 532-2313 |
| Bryco Machine Inc 7800 Graphic Dr, Tinley Park 60477 | (708) 614-1900 |
| D W Ram Mfg 18530 Spring Creek Dr, Tinley Park 60477 | (708) 633-7900 |
| R B Tool & Mfg Inc 8200 185th St, Tinley Park 60477 | (708) 444-0933 |
| Ricoh Corp 18425 W West Creek Dr, Tinley Park 60477 | (708) 444-0506 |