| Business | Phone |
| Washington Group Intl 1437 S Bell School Rd 7, Rockford 61108 | (815) 397-7724 |
| Caz Manufacturing Solutions 6473 Barrick Dr, Rockford 61114 | (815) 282-4982 |
| Engineering Services Mech 555 N Court St # 103, Rockford 61103 | (815) 964-4381 |
| Fehr-Graham & Assoc 1920 Daimler Rd, Rockford 61112 | (815) 394-4700 |
| Gary Reiter Consulting Svc Inc 2880 Darrowby Dr, Rockford 61102 | (815) 965-5952 |
| Hanson Professional Svc Inc 6775 Fincham Dr, Rockford 61108 | (815) 398-4600 |
| Legacy Designs 6116 Mulford Village Dr, Rockford 61107 | (815) 484-4708 |