| Business | Phone |
| Collins-Saddler & Assoc 1599 N Central Dr, Dayton 45432 | (937) 426-8145 |
| Ceso 1700 Lyons Rd, Dayton 45458 | (937) 435-8584 |
| V L Assoc 3205 Wilmington Pike # 1, Dayton 45429 | (937) 293-9375 |
| Van Atta Engineering Inc 570 Congress Park Dr, Dayton 45459 | (937) 438-5650 |
| Veenhuis Consulting Svc 1167 Chisolm Trl, Dayton 45458 | (937) 885-7122 |
| Schaeffer Amos & Hughes 1253 Lyons Rd # G, Dayton 45458 | (937) 434-5104 |
| Judge Engineering Co 1201 E David Rd # 101, Dayton 45429 | (937) 294-1441 |