| Business | Phone |
| Heat Transfer Consultants 1718 Linda Dr, Pleasant Hill 94523 | (925) 827-9689 |
| Specialized Computing 3333 Vincent Rd, Pleasant Hill 94523 | (925) 934-1150 |
| Wymac Capital 3478 Buskirk Ave # 260, Pleasant Hill 94523 | (925) 937-4300 |
| Galvin Systems 340 Golf Club Rd # 1, Pleasant Hill 94523 | (925) 685-6308 |
| J F Merz & Assoc 33 Camelback Ct, Pleasant Hill 94523 | (925) 676-9932 |
| Lucas & Co 6 Boies Ct, Pleasant Hill 94523 | (925) 944-5034 |
| Penncel Software 14 Monivea Pl, Pleasant Hill 94523 | (925) 934-0792 |