| Business | Phone |
| Alicat Scientific Inc 2045 N Forbes Blvd # 103, Tucson 85745 | (520) 290-6060 |
| Universal Cryogenics 38 E Grant Rd, Tucson 85705 | (520) 622-6277 |
| Varian Medical Systems Inc 3524 E Nugget Canyon Pl, Tucson 85718 | (520) 232-9051 |
| Soil Measurement Systems 7090 N Oracle Rd # 178-170, Tucson 85704 | (520) 742-4471 |