| Business | Phone |
| Circuit Engineering-Ced 1312 E Wieding Rd, Tucson 85706 | (520) 294-1221 |
| Elliott Electronic Supply 1251 S Tyndall Ave # 113, Tucson 85713 | (520) 884-7394 |
| Inner Step 3280 E Hemisphere Loop # 140, Tucson 85706 | (520) 294-0788 |
| Yarbrough Electronics Sales 1626 S Country Club Rd, Tucson 85713 | (520) 795-1603 |
| Tucson Printed Circuits 770 E Evans Blvd, Tucson 85713 | (520) 622-1400 |
| Silver Mountain Design 5055 E Broadway Blvd # C214, Tucson 85711 | (520) 519-1069 |