| Business | Phone |
| Fluid Technologies 1631 Ne 55th Ave, Des Moines 50313 | (515) 263-9210 |
| Nichols Control & Supply Co 1721 Dean Ave, Des Moines 50316 | (515) 564-0437 |
| Control Installations Of Iowa 6200 Thornton Ave 190, Des Moines 50321 | (515) 244-2551 |
| R E Michel Co 927 8th St, Des Moines 50309 | (515) 288-7211 |
| Woodman Controls Co 3850 Merle Hay Rd, Des Moines 50310 | (515) 276-8111 |