| Business | Phone |
| Bay Fire Protection 1399 El Dorado Dr, Concord 94518 | (925) 825-9050 |
| Certifire Concord 94520 | (925) 689-9653 |
| Marquee Fire Protection 1870 Arnold Industrial Pl 1060, Concord 94520 | (925) 691-0744 |
| Pyrocorp Industries Inc Concord 94520 | (925) 689-5600 |