| Business | Phone |
| Alpha Clamp Manufacturer 429 Olive St, Santa Rosa 95407 | (707) 569-1586 |
| Barrington Consultants Inc 2239 Valdes Ct, Santa Rosa 95403 | (707) 527-8254 |
| Calculex 131 Stony Cir, Santa Rosa 95401 | (707) 578-2307 |
| Eaton Cutler-Hammer 987 Airway Ct # 42, Santa Rosa 95403 | (707) 528-9000 |
| Hybrinetics Inc 225 Sutton Pl, Santa Rosa 95407 | (707) 585-0333 |
| Pni Corp 5464 Skylane Blvd, Santa Rosa 95403 | (707) 566-2260 |
| Redfish Photonics Inc 5460 Skylane Blvd, Santa Rosa 95403 | (707) 545-9800 |
| Schurter Inc 447 Aviation Blvd, Santa Rosa 95403 | (707) 636-3000 |
| Vida Products 3581 Westwind Blvd, Santa Rosa 95403 | (707) 541-7000 |