| Business | Phone |
| Blackburn Machine & Fab Llc 7525 Wynlea St, Houston 77061 | (713) 644-2386 |
| Johnson Controls 900 Central St, Houston 77012 | (713) 926-6005 |
| Concept Services 3010 Kismet Ln, Houston 77043 | (713) 462-6315 |
| Northwest Ok Svc 7121 Spindle Dr, Houston 77086 | (281) 447-8585 |
| Ren Tin Sheet Metal 735 W Tidwell Rd, Houston 77091 | (713) 691-8554 |
| Barrett Manufacturing Co 1929 Miller St, Houston 77003 | (713) 228-6423 |
| Weiser Sheet Metal Inc 1815 Cleburne St, Houston 77004 | (713) 529-0536 |
| Vogler Sheet Metal Co 705 Shepherd Dr, Houston 77007 | (713) 861-1154 |
| S & H Sheet Metal-Fabricating 7215 Avenue N, Houston 77011 | (713) 926-3350 |
| Rpr Products Inc 407 Delz St, Houston 77018 | (713) 697-7003 |
| Texas Metal Specialty 3717 Pinemont Dr, Houston 77018 | (713) 688-9930 |
| Oaks Precision Fabricating Inc 8550 Breen Rd, Houston 77064 | (713) 937-9190 |
| Southwest Fab 11711 Hillbrook Dr, Houston 77070 | (281) 376-9314 |
| Viking Metal Crafters 15519 Silver Ridge Dr, Houston 77090 | (281) 587-1919 |
| Tsm Inc 8026 E Hardy Rd, Houston 77093 | (713) 691-5271 |
| Wimberley Sheet Metal Co 2938 Luell St, Houston 77093 | (713) 695-8644 |