| Business | Phone |
| High Tower Trading Systems 3028 Silver Springs Ln, Plano 75025 | (972) 546-3054 |
| Isolvesystems 5909 Colby Dr, Plano 75094 | (214) 938-3875 |
| Trade Venture Intl 1520 Preston Rd 1218, Plano 75093 | (972) 596-5008 |
| Unit Intl Corp 3401 Custer Rd 100, Plano 75023 | (972) 758-0640 |