| Business | Phone |
| Elliott Electric Supply Inc 445 Texas Ave, Round Rock 78664 | (512) 246-8001 |
| Nunn Electric Supply Corp 206 W Bowman Dr, Round Rock 78664 | (512) 238-9590 |
| X-Press Micro Inc 2801 Oakmont Dr, Round Rock 78664 | (512) 733-8989 |
| Teco Westinghouse Motor Co 5100 N I H 35, Round Rock 78681 | (512) 248-5600 |
| Electronic Precision Materials 425 Round Rock West Dr, Round Rock 78681 | (512) 759-2325 |
| New Systems 1201 N Industrial Blvd, Round Rock 78681 | (512) 388-4806 |
| Innova Electronics 304 Gladeview Dr, Round Rock 78681 | (512) 248-0055 |