| Business | Phone |
| Lear Engineering 1310 Research Park Dr, Dayton 45432 | (937) 429-0534 |
| Vulcan Tool Co 730 Lorain Ave, Dayton 45410 | (937) 253-6194 |
| Globe Products Inc 5051 Kitridge Rd, Dayton 45424 | (937) 233-0233 |
| Pdsi Technical Svc 401 Fame Rd, Dayton 45449 | (937) 866-3377 |
| M & M Precision Systems Corp 300 Progress Rd, Dayton 45449 | (937) 859-8273 |