| Business | Phone |
| P & W Quality Machine 2701 Gattis School Rd # B, Round Rock 78664 | (972) 299-0500 |
| Reliable Manufacturing Inc 1900 Fm 1460, Round Rock 78664 | (512) 255-6572 |
| Tri-M Machine 18 Indian Meadows Dr 5a, Round Rock 78664 | (512) 388-9757 |
| Astro Mechanics Inc 1411 Sam Bass Rd, Round Rock 78681 | (512) 246-9200 |
| Roundrock Machine & Mfg Inc 1507 Brandi Ln, Round Rock 78681 | (512) 255-9935 |
| Silicon Light Machines 17 Cypress Blvd, Round Rock 78664 | (512) 341-9211 |