| Business | Phone |
| Innovative Technology Products 279 Crandall Dr Ne, Cedar Rapids 52402 | (319) 377-3975 |
| West Plains Engineering 800 1st Ave Ne, Cedar Rapids 52402 | (319) 365-0030 |
| Phoenix Engineering Intl Inc 318 Crandall Dr Ne, Cedar Rapids 52402 | (319) 377-0103 |
| R-Net Engineering & Technology 808 Green Valley Ter Se, Cedar Rapids 52403 | (319) 362-7780 |
| Acme Engineering Div 3353 Southgate Ct Sw, Cedar Rapids 52404 | (319) 365-8670 |