| Business | Phone |
| Advanced Precision Machining 1649 Monrovia Ave, Costa Mesa 92627 | (949) 650-6113 |
| Gertler Industries 914 W 17th St, Costa Mesa 92627 | (949) 631-4474 |
| Acrodyne Machine 2944 Randolph Ave, Costa Mesa 92626 | (714) 957-8817 |
| Adolt Manufacturing & Design 1612 Placentia Ave, Costa Mesa 92627 | (949) 642-0601 |
| Autocal 382 Clinton St, Costa Mesa 92626 | (714) 444-4200 |
| B C Doering Co 111 E 16th St, Costa Mesa 92627 | (949) 548-4522 |
| Dga Machine 1760 Monrovia Ave, Costa Mesa 92627 | (949) 650-6070 |
| Wolf Tool Co 783 Newton Way, Costa Mesa 92627 | (949) 646-4468 |
| Trio Precision Mach Co 1703 Monrovia Ave, Costa Mesa 92627 | (949) 631-6902 |
| Harbor Machine Shop 1835 Whittier Ave # A3, Costa Mesa 92627 | (949) 642-6981 |
| Mac Farlane Engineering 1733 Monrovia Ave # M, Costa Mesa 92627 | (949) 631-6621 |
| Nimmo Machine 764 Newton Way # A, Costa Mesa 92627 | (949) 548-4723 |
| Parsons Manufacturing 717 Ohms Way, Costa Mesa 92627 | (949) 646-7663 |