| Business | Phone |
| Allied Fabrication & Leak 1762 Timothy Dr, San Leandro 94577 | (510) 346-2521 |
| Edward's Welding Po Box 3264, San Leandro 94578 | (510) 352-1683 |
| Mal's Precision Welding 16108 Mateo St, San Leandro 94578 | (510) 481-7966 |
| Tac Engineering 14071 Catalina St, San Leandro 94577 | (510) 895-5662 |