| Business | Phone |
| M Clark Corp 2222 Johnson Ave Nw, Cedar Rapids 52405 | (319) 396-9680 |
| Engineering Innovation 6045 Rockwell Dr Ne, Cedar Rapids 52402 | (319) 294-2321 |
| Mms Consultants Inc 5761 C St Sw D, Cedar Rapids 52404 | (319) 841-5188 |
| Specialized Products Inc 6738 6th St Sw, Cedar Rapids 52404 | (319) 365-3031 |