| Business | Phone |
| Advanced Installation Svc 2915 Whipple Rd, Union City 94587 | (510) 441-6200 |
| Integrated Services 1550 Whipple Rd, Union City 94587 | (510) 487-7701 |
| Luis Soto Installation 2435 Early Rivers Pl, Union City 94587 | (510) 477-0637 |
| Pam's Office Solution 30580 Whipple Rd, Union City 94587 | (510) 489-7267 |