| Business | Phone |
| Architectural Stone Corp 22803 Clawiter Rd, Hayward 94545 | (510) 293-9480 |
| Custom Construction 25362 Cypress Ave, Hayward 94544 | (510) 264-1433 |
| Jerong Products Inc 2460 Radley Ct, Hayward 94545 | (510) 782-2888 |
| Omni Marble 23888 Connecticut St # 12, Hayward 94545 | (510) 264-9613 |
| Vap Onyx Intl Onyx Marble 27057 Industrial Blvd, Hayward 94545 | (510) 670-0393 |