| Business | Phone |
| Boyer Built Machines 2930 Mcmillan Ave # A, San Luis Obispo 93401 | (805) 544-2113 |
| Custom Machine Inc 855 Via Esteban # A, San Luis Obispo 93401 | (805) 544-9432 |
| Deneb Manufacturing 2830 Mcmillan Ave, San Luis Obispo 93401 | (805) 541-4023 |
| Mainland Machine 2930 Mcmillan Ave # E, San Luis Obispo 93401 | (805) 543-7149 |
| Mayes Micro Machine Co 710 Fiero Ln # 19, San Luis Obispo 93401 | (805) 784-0564 |
| Next Intent Inc 865 Via Esteban, San Luis Obispo 93401 | (805) 781-6755 |
| Progressive Products 2930 Mcmillan Ave, San Luis Obispo 93401 | (805) 544-5275 |
| Richard Gordon Co 4096 Horizon Ln # B, San Luis Obispo 93401 | (805) 544-3314 |
| San Luis Machine Co 200 Suburban Rd # F2, San Luis Obispo 93401 | (805) 549-8065 |
| Snider Precision Inc 648 Clarion Ct, San Luis Obispo 93401 | (805) 541-8338 |
| Suspension Concepts 3621 Sacramento Dr # 3, San Luis Obispo 93401 | (805) 549-8279 |
| Top Precision Llc 2741 Mcmillan Ave, San Luis Obispo 93401 | (805) 786-4672 |