| Business | Phone |
| York Controls 520 W Pennway St, Kansas City 64108 | (816) 472-9675 |
| Kilgore Industries 2930 Terrace St, Kansas City 64108 | (816) 561-0750 |
| Lewis Controls & Automation 6200 Nw Kelly Dr # 2, Kansas City 64152 | (816) 587-5323 |
| Propulsion Controls Co 10737 Nw Ambassador Dr, Kansas City 64153 | (816) 891-9093 |