| Business | Phone |
| Advance Carbon Products 2036 National Ave, Hayward 94545 | (510) 293-5930 |
| Applied Photon Technology 3346 Arden Rd, Hayward 94545 | (510) 780-9500 |
| Cutler-Hammer Satellite 20923 Cabot Blvd, Hayward 94545 | (510) 784-8981 |
| Forni Manufacturer & Distributing Corp 2306 American Ave # 4, Hayward 94545 | (510) 783-3400 |
| M & W Systems 2346 Tripaldi Way, Hayward 94545 | (510) 887-7008 |
| Milestone Manufacturing 1273 Industrial Pkwy W, Hayward 94544 | (510) 581-7400 |
| Preferred Sales Inc 31177 Wiegman Rd, Hayward 94544 | (510) 487-9755 |
| Protemp 26250 Corporate Ave, Hayward 94545 | (510) 781-0113 |
| Rise Tech Precision 709 Sandoval Way, Hayward 94544 | (510) 477-0921 |
| Ryko Manufacturer Co 30970 Huntwood Ave, Hayward 94544 | (510) 441-2781 |
| Brighton Best Socket Screw Manufacturer 30964 San Benito St, Hayward 94544 | (510) 489-8923 |
| K & S Test Products 3191 Corporate Pl, Hayward 94545 | (510) 782-2654 |
| Pro Street Industries 1680 W Winton Ave, Hayward 94545 | (510) 723-0001 |
| Si Tek Optic Net 3167 Corporate Pl, Hayward 94545 | (510) 300-1120 |
| Silgan Containers Manufacturer Corp 24301 Southland Dr # 307, Hayward 94545 | (510) 785-4658 |
| Silicon Specialists Inc 2487 Industrial Pkwy W, Hayward 94545 | (510) 732-9796 |
| Thibert Engineering Concepts 2439 Industrial Pkwy W, Hayward 94545 | (510) 670-9010 |
| Ultrasil Corp 3527 Breakwater Ave, Hayward 94545 | (510) 266-3700 |