| Business | Phone |
| Air Tech 6167 Jarvis Ave # 291, Newark 94560 | (925) 778-3500 |
| Atlas Sales Inc 37330 Cedar Blvd # J, Newark 94560 | (510) 713-3313 |
| Copeland Mechanical 8040 Wells Ave # D, Newark 94560 | (510) 795-7216 |
| Dayspring Enteprises 5423 Central Ave # 5, Newark 94560 | (510) 797-8600 |