| Business | Phone |
| Safety Systems Controls 1201 Upland Dr C1, Houston 77043 | (713) 465-8839 |
| Transcat 1181 Brittmoore Rd 600, Houston 77043 | (713) 465-4399 |
| Reliability Inc 16400 Park Row, Houston 77084 | (281) 492-0550 |
| Techni-Flow Inc 2403 Crooked Ln, Houston 77084 | (281) 578-1686 |
| Wahlberg-Mc Creary Inc 3810 Dacoma St, Houston 77092 | (713) 684-0000 |