| Business | Phone |
| All American Semiconductor 275 Marcus Blvd # B, Hauppauge 11788 | (631) 434-9000 |
| Betatronix Inc 110 Nicon Ct, Hauppauge 11788 | (631) 582-6740 |
| Central Semiconductor Corp 145 Adams Ave, Hauppauge 11788 | (631) 435-1110 |
| Freescale Semiconductor 700 Veterans Hwy, Hauppauge 11788 | (631) 361-7000 |
| Pall Corp 225 Marcus Blvd, Hauppauge 11788 | (631) 273-0911 |
| General Semiconductor 100 Motor Pkwy, Hauppauge 11788 | (631) 300-3800 |
| Intersil Corp 700 Veterans Hwy # Ll50, Hauppauge 11788 | (631) 265-4929 |
| Standard Microsystems Corp 80 Arkay Dr, Hauppauge 11788 | (631) 435-6000 |