| Business | Phone |
| Automated Micro Precision 22720 State Highway 88, Pioneer 95666 | (209) 295-7644 |
| Moore Precision Manufacturer 22730 State Highway 88 # 1, Pioneer 95666 | (209) 295-1300 |
| Sierra Engine & Machine 22588 State Highway 88, Pioneer 95666 | (209) 295-3141 |