| Business | Phone |
| Applied Materials Inc 9480 Innovation Dr, Manassas 20110 | (703) 331-1476 |
| Axcelis Technologies Inc 8667 Sudley Rd 313, Manassas 20110 | (703) 365-0026 |
| Tokyo Electron America Inc 10318 Battleview Pkwy, Manassas 20109 | (703) 392-1800 |
| Novellus Systems Inc 7724 Donegan Dr, Manassas 20109 | (703) 367-7255 |
| Micron Technology Inc 9600 Godwin Dr, Manassas 20110 | (703) 396-1000 |