| Business | Phone |
| Focus 21 Forwarding Group 936 Detroit Ave # K, Concord 94518 | (925) 602-1280 |
| Pacer International Inc 2300 Clayton Rd # 1200, Concord 94520 | (925) 887-1400 |
| Amerasa Rapid Transit Usa Inc 936 Detroit Ave # K, Concord 94518 | (925) 602-1280 |
| John G Matulich Concord 94520 | (925) 685-2215 |