| Business | Phone |
| Applied Materials Inc 1 Cabot Rd, Hudson 1749 | (978) 567-8200 |
| Asml 104 Forest Ave, Hudson 1749 | (978) 562-1751 |
| Sanyo Semiconductor Corp 14 Main St, Hudson 1749 | (978) 562-9660 |
| Novellus Systems Inc 131 Coolidge St, Hudson 1749 | (978) 562-4890 |
| Nikon Precision Inc 7 Bonazzoli Ave # B, Hudson 1749 | (978) 567-1023 |
| Kla-Tencor Corp 118 Forest Ave # 205, Hudson 1749 | (508) 898-0091 |