| Business | Phone |
| Consolidated Research 5203 Langfield Rd, Houston 77040 | (713) 895-8818 |
| J Turner Research 2500 Wilcrest Dr 300, Houston 77042 | (713) 954-4840 |
| Acheiva Research Foundation 4803 Main St, Houston 77002 | (713) 527-8549 |
| Advanced Aquatic Research 5807 Edgemoor Dr, Houston 77081 | (713) 349-0480 |
| Aspen Research Group 1911 Westmead Dr, Houston 77077 | (281) 419-4980 |
| Bayou City Research Inc 550 Westcott St, Houston 77007 | (832) 251-7000 |
| Bri Institutional Review 9432 Old Katy Rd 370, Houston 77055 | (713) 365-0222 |
| Clarion Research 1101 Post Oak Blvd, Houston 77056 | (713) 599-2316 |
| Clinical Research Of Houston 7550 Fannin St 120, Houston 77054 | (713) 512-7724 |
| Court Record Research Inc 1115 Congress St, Houston 77002 | (713) 237-8628 |
| Endpoint Research 3333 Eastside St, Houston 77098 | (713) 807-7044 |
| Energy Research Ctr 10900 Brittmoore Park Dr, Houston 77041 | (713) 375-9977 |
| Exxon Company U S A 3120 Buffalo Speedway, Houston 77098 | (713) 431-4222 |
| Med-Tec Research 8830 Long Point Rd 601, Houston 77055 | (713) 467-2351 |
| Masi Technology 8275 El Rio St 130, Houston 77054 | (713) 490-1670 |
| Madison Research 18333 Egret Bay Blvd 270, Houston 77058 | (281) 335-3978 |
| Korea Ras Laffan Lng 1 Riverway, Houston 77056 | (713) 403-4480 |
| Hra Gray & Pape 4801 Woodway Dr 250, Houston 77056 | (713) 541-0473 |
| Plish Imports Corp 11511 Katy Fwy 560, Houston 77079 | (281) 870-1340 |
| Juno Research 12600 Bissonnet St E1, Houston 77099 | (281) 495-0173 |
| Joe W King Institute 7401 Main St, Houston 77030 | (713) 794-3517 |
| Employer's Research Syst 14405 Walters Rd, Houston 77014 | (832) 249-6084 |
| N Compass Research Inc 5615 Belrose Dr, Houston 77035 | (713) 828-6840 |