| Business | Phone |
| Computer Machining Co 2831 Junipero Ave # 600, Signal Hill 90755 | (562) 595-8210 |
| Frenchy's Machine Shop 1855 E 29th St, Signal Hill 90755 | (562) 595-1711 |
| Miller Machine Works 1897 Freeman Ave, Signal Hill 90755 | (562) 498-2959 |
| Ace Manufacturing 1512 E 33rd St, Signal Hill 90755 | (562) 988-3001 |
| B & D Precision Engineering 1402 E 33rd St, Signal Hill 90755 | (562) 989-2929 |
| Creger Machine & Tool 1030 E Burnett St, Signal Hill 90755 | (562) 426-5458 |
| F R Automotive Machine Shop 2700 Rose Ave # B, Signal Hill 90755 | (562) 426-5241 |
| Flores Enterprise 1729 E 28th St, Signal Hill 90755 | (562) 595-1313 |
| Hole Shoppe 3273 E Grant St, Signal Hill 90755 | (562) 498-1446 |
| Hsc Machine Werks 1404 E 33rd St, Signal Hill 90755 | (562) 997-8848 |
| Metal Works Unlimited 1005 E Burnett St, Signal Hill 90755 | (562) 989-5700 |
| Weber & Son 2442 Brayton Ave, Signal Hill 90755 | (562) 595-8936 |