| Business | Phone |
| M P Kenes Inc 15638 S 70th Ct, Orland Park 60462 | (708) 429-5933 |
| Sterling Engineering Orland Park 60462 | (708) 873-1285 |
| Smith Ml Environmental 15639 Garden View Ct, Orland Park 60462 | (708) 418-1978 |
| Petra Engineering Corp 9905 W 151st St, Orland Park 60462 | (708) 645-0141 |
| Seemar Corp 10423 Amber Ln, Orland Park 60467 | (708) 478-0266 |
| Tronamix Inc 11720 Shaker Ct, Orland Park 60467 | (708) 460-2128 |