| Business | Phone |
| Accuracy Machine Inc 37390 Cedar Blvd # A, Newark 94560 | (510) 742-1318 |
| Arbco Machine Svc 8240 Enterprise Dr, Newark 94560 | (510) 353-9255 |
| Bay Advanced Technologies 8652 Thornton Ave, Newark 94560 | (510) 608-8960 |
| C J Machine Products 37533 Enterprise Ct # F, Newark 94560 | (510) 796-1152 |
| Clearemont Industries 37310 Cedar Blvd, Newark 94560 | (510) 742-1432 |
| Feral Productions Co 37390 Cedar Blvd # E, Newark 94560 | (510) 791-5392 |
| Milliflect 37444 Sycamore St # A, Newark 94560 | (510) 791-5188 |
| San Mina-Sci 8455 Cabot Ct, Newark 94560 | (510) 793-9100 |
| Steve Currie Machining 37580 Enterprise Ct # L, Newark 94560 | (510) 713-9101 |