| Business | Phone |
| A Black Diamond Printing 144 Continente Ave # 160, Brentwood 94513 | (925) 513-7517 |
| Desk-Tech Graphic Design Brentwood 94513 | (925) 634-7593 |
| Mayo Design Svc 25 Briarwood Ct, Brentwood 94513 | (925) 634-7235 |
| Rico Visuals 850 Bonnie Ln, Brentwood 94513 | (925) 516-7610 |