| Business | Phone |
| American Flow Measurement Co 4031 Broadway St 106, Houston 77087 | (713) 644-3414 |
| Coastal Flow Measurement Inc 2222 Bay Area Blvd # 200, Houston 77058 | (713) 477-1956 |
| Critco Flow Measurement 10218 Georgibelle Dr 200, Houston 77043 | (713) 463-7773 |
| Ems Pipeline Svc 2100 West Loop S 1450, Houston 77027 | (713) 595-7600 |
| Glenn Brooks & Assoc 8414 Leader St, Houston 77036 | (713) 777-1467 |
| Houston Flow Measurement Inc 4116 Rose Way, Houston 77025 | (713) 668-6000 |