| Business | Phone |
| Airtrim Inc 1940 S Yellow Springs St, Springfield 45506 | (937) 324-2272 |
| Am Pro Consulting 1610 S Burnett Rd, Springfield 45505 | (937) 322-6632 |
| City Electric Product Techs 6 W High St, Springfield 45502 | (937) 322-2962 |
| Emil F Toriello & Assoc 2748 Columbus Ave, Springfield 45503 | (937) 322-9229 |
| Healthcare Engineering Consultant 2830 Skylark Rd, Springfield 45502 | (937) 322-1708 |
| J & S Instruments Inc 3071 State Route 72 S, Springfield 45505 | (937) 325-7499 |
| Wepuko Pahnke Engineering Lp 4949 Urbana Rd, Springfield 45502 | (937) 390-2100 |