| Business | Phone |
| Advanced Automatic Sprinkler 30993 Huntwood Ave # 204, Hayward 94544 | (510) 429-6793 |
| Allan Automatic Sprinkler Corp 20303 Mack St, Hayward 94545 | (510) 785-4200 |
| Potter Fire Protection Inc 22156 Meekland Ave, Hayward 94541 | (510) 581-3473 |
| Golden Bear Fire Protection 23315 Connecticut St, Hayward 94545 | (510) 782-3163 |
| Supply Net West 30996 Santana St, Hayward 94544 | (510) 429-7295 |