| Business | Phone |
| Advanced Business Equipment 2344 Stanwell Cir, Concord 94520 | (925) 825-2255 |
| Astro Business Technologies 2221 Commerce Ave # B1, Concord 94520 | (925) 676-0304 |
| Long On Svc Concord 94520 | (925) 676-6102 |
| Ricoh Business Systems 1001 Galaxy Way # 107, Concord 94520 | (925) 603-1300 |
| Total Office Systems 4085 Nelson Ave # D, Concord 94520 | (925) 680-4944 |
| Copytech Services 1093 Shary Cir, Concord 94518 | (925) 625-4886 |
| Ikon Office Solutions Inc 1390 Willow Pass Rd, Concord 94520 | (925) 988-4333 |
| Office Machine Specialists 1647 Willow Pass Rd # 104, Concord 94520 | (925) 825-5792 |