| Business | Phone |
| Aztec Tooling Inc 30555 Miller Rd, Valley Center 92082 | (760) 751-8380 |
| Machining Design 11923 Keys Creek Rd, Valley Center 92082 | (760) 742-0556 |
| Quality Machine 15357 Cool Valley Rd, Valley Center 92082 | (760) 749-2196 |
| Valley Machine & Weld 15855 Camino Conejo, Valley Center 92082 | (760) 749-7435 |