| Business | Phone |
| Ashland Grinding & Balancing 21921 Meekland Ave, Hayward 94541 | (510) 537-5353 |
| C J Machine Products 3166 Diablo Ave, Hayward 94545 | (510) 796-1152 |
| Danworth Manufacturing 30991 Huntwood Ave # 401, Hayward 94544 | (510) 487-8290 |
| English Brothers Pattern 2168 American Ave, Hayward 94545 | (510) 783-5700 |