| Business | Phone |
| Shear Metal Production 258 La Moree Rd, San Marcos 92078 | (760) 744-7745 |
| Pairadice Sheet Metal 143 N Pacific St, San Marcos 92069 | (760) 736-4613 |
| Omni Duct 848 Rancheros Dr, San Marcos 92069 | (760) 781-3889 |
| Microfab Manufacturing Inc 220 Distribution St, San Marcos 92078 | (760) 744-7240 |
| Hans Liebscher Custom Sheet 255 Industrial St, San Marcos 92078 | (760) 591-7546 |