| Business | Phone |
| Millipart 412 W Carter Dr, Glendora 91740 | (626) 963-4101 |
| Pro-Lane Industries 154 S Valencia Ave, Glendora 91741 | (626) 335-3636 |
| Swiss House 128 S Valencia Ave # A, Glendora 91741 | (626) 963-0368 |
| X-Cel Precision 2001 E Gladstone St # F, Glendora 91740 | (909) 599-1319 |
| Acratech 2041 E Gladstone St # H, Glendora 91740 | (909) 394-1802 |
| Complete Metal Designs Inc 154 S Valencia Ave, Glendora 91741 | (626) 335-3636 |
| E & F Machine 307 S Vermont Ave, Glendora 91741 | (626) 914-3494 |
| Raydon Co 442 Fleetwood Pl # B, Glendora 91740 | (626) 963-3863 |