| Business | Phone |
| Accelerated Design 128 Daniel Dr, Huntsville 35811 | (256) 858-8568 |
| Alpha Technology 3322 Memorial Pkwy Sw # 213, Huntsville 35801 | (256) 883-1373 |
| Frederick Energy Products 1769 Jeff Rd Nw # B, Huntsville 35806 | (256) 830-2008 |
| Integrated Concepts & Research 6767 Old Madison Pike Nw, Huntsville 35806 | (256) 971-0805 |
| Intuitive Research & Tech Corp 6767 Old Madison Pike Nw, Huntsville 35806 | (256) 922-9300 |
| K-T Engineering 4835 University Sq, Huntsville 35816 | (256) 489-5832 |
| Lesco 4845 University Sq # 1, Huntsville 35816 | (256) 721-9272 |
| Otc Inc 1428 Weatherly Rd Se # 106, Huntsville 35803 | (256) 489-2623 |
| Radiance Technologies 500 Wynn Dr Nw, Huntsville 35816 | (256) 704-3400 |
| Ses 4015 Pulaski Pike Nw, Huntsville 35810 | (256) 858-0106 |
| United International Engineer 555 Sparkman Dr Nw # 600d, Huntsville 35816 | (256) 721-1719 |
| Westar Aerospace & Defense Inc 4950 Corporate Dr Nw, Huntsville 35805 | (256) 430-1610 |