| Business | Phone |
| Alt & Witzig Engineering Inc 6205 Schumacher Park Dr, West Chester 45069 | (513) 777-9890 |
| Miltron Technologies Inc 7231 Vinnedge Rd, West Chester 45069 | (513) 942-6272 |
| Smart Science Ltd 8320 Fox Knoll Ct, West Chester 45069 | (513) 777-2893 |