| Business | Phone |
| Ace Precision Machine 3069 Wiljan Ct # D, Santa Rosa 95407 | (707) 526-3193 |
| Artisan Laser 3186 Coffey Ln, Santa Rosa 95403 | (707) 566-2116 |
| Empire Machining 468 Yolanda Ave # 807, Santa Rosa 95404 | (707) 528-8075 |
| Galvin Precision Machining Inc 404 Yolanda Ave, Santa Rosa 95404 | (707) 526-5359 |
| Jaskela-Weld Fab Machine 3585 Moorland Ave, Santa Rosa 95407 | (707) 584-2937 |
| Kelly's Precision Grinding Inc 468 Yolanda Ave # 11, Santa Rosa 95404 | (707) 527-0197 |
| Mc Cann Machine & Manufacturer 1075 Sebastopol Rd, Santa Rosa 95407 | (707) 546-2872 |
| Modern Machine & Tool 265 Roberts Ave, Santa Rosa 95407 | (707) 544-7281 |
| Nmp Products-Prototype 535 Irwin Ln, Santa Rosa 95401 | (707) 568-6820 |
| Phillips Design 3100 Dutton Ave # 124, Santa Rosa 95407 | (707) 546-1599 |
| Quality Machine Engineering 5600 Skylane Blvd, Santa Rosa 95403 | (707) 528-1900 |
| R & D Machining 490 Mayfield Dr, Santa Rosa 95403 | (707) 566-9491 |
| Randy's Design & Machine Inc 242 Roberts Ave, Santa Rosa 95401 | (707) 544-6011 |
| Rpm Optoelectronics 1726 Corby Ave, Santa Rosa 95407 | (707) 573-0801 |
| Selby & Sons Engine Machine 804 Piner Rd, Santa Rosa 95403 | (707) 526-4758 |
| Sonoma Precision Manufacturer Co 3055 Wiljan Ct, Santa Rosa 95407 | (707) 576-1550 |
| Systematic Manufacturing 3451 Airway Dr # F, Santa Rosa 95403 | (707) 571-8633 |