| Business | Phone |
| G C Intl Inc 1301 Precision Dr, Plano 75074 | (972) 423-8411 |
| Third Millenium Engineering Po Box 867178, Plano 75086 | (972) 491-1132 |
| Sychip Inc 2805 N Dallas Pkwy 400, Plano 75093 | (972) 202-8900 |
| Solid Silicon Technology 1721 W Plano Pkwy, Plano 75075 | (972) 516-0999 |