| Business | Phone |
| Brown Cnc Machining Inc 433 E Maple Ave, Miamisburg 45342 | (937) 865-9191 |
| Day-Tec Tool & Manufacturer Inc 4900 Lyons Rd, Miamisburg 45342 | (937) 847-0022 |
| Rose Grinding & Manufacturer Co 9600 Byers Rd, Miamisburg 45342 | (937) 866-6339 |
| Quadco Precision 1070 Vanguard Blvd, Miamisburg 45342 | (937) 847-8207 |
| Mound Manufacturing Center 720 Mound Rd # 28, Miamisburg 45342 | (937) 865-4866 |