| Business | Phone |
| Advantage Engineering 814 Lusterleaf Dr, Sunnyvale 94086 | (408) 720-8788 |
| Bartfai Engineering 1092 W Evelyn Ave, Sunnyvale 94086 | (408) 245-2811 |
| Elite E-M Inc 1176 Aster Ave # S, Sunnyvale 94086 | (408) 732-4444 |
| Eme Technologies Inc 224 N Wolfe Rd, Sunnyvale 94085 | (408) 720-8817 |
| Formula 1168 Aster Ave, Sunnyvale 94086 | (408) 249-0643 |
| Polytropic Design Group 690 W Fremont Ave, Sunnyvale 94087 | (408) 746-3986 |
| Vista Engineering 755 N Mary Ave, Sunnyvale 94085 | (408) 739-8007 |