| Business | Phone |
| E & J Machine Shop 190 N Arrowhead Ave # H, Rialto 92376 | (909) 820-1958 |
| F J Konz Machine & Tool Rialto 92376 | (909) 854-5433 |
| Lar-Vel Engineering 1240 N Fitzgerald Ave # 108, Rialto 92376 | (909) 875-1851 |
| Mountain View Precision Fab 1360 N Fitzgerald Ave, Rialto 92376 | (909) 421-9835 |
| Empire Engineering Co 1320 N Fitzgerald Ave # A, Rialto 92376 | (909) 877-0696 |
| Funco 1280 N Fitzgerald Ave # F, Rialto 92376 | (909) 421-2558 |
| G & S Machine Shop 896 W Rialto Ave, Rialto 92376 | (909) 874-9297 |
| Losman Tool 1285 N Fitzgerald Ave, Rialto 92376 | (909) 820-3511 |
| Romero's Machine Shop 1260 N Fitzgerald Ave # 116, Rialto 92376 | (909) 877-5983 |
| Dana Sizemore 1285 N Fitzgerald Ave, Rialto 92376 | (909) 875-1509 |
| Walkers Machine 1111 W Rialto Ave, Rialto 92376 | (909) 873-2511 |
| Ernie's Machine Shop 755 W Rialto Ave, Rialto 92376 | (909) 820-9005 |