| Business | Phone |
| Kline Engineering 2200 Queensbury Way, Fort Smith 72908 | (479) 648-1171 |
| Northwest Controls Systems Inc 47 Hiland St, Fort Smith 72901 | (479) 782-0900 |
| Automation Equipment Sales 1501 N 36th St, Fort Smith 72904 | (479) 783-2822 |
| Automation Motion & Process 5300 S 31st St, Fort Smith 72901 | (479) 646-7770 |
| Control Technologies Inc 1115 S Waldron Rd # 102, Fort Smith 72903 | (479) 646-2203 |