| Business | Phone |
| Metrology Laboratory Inc 2425 Babcock Rd 100, San Antonio 78229 | (210) 593-9750 |
| Severn Trent Labs 404 E Ramsey Rd 208, San Antonio 78216 | (210) 344-9751 |
| Eg & G Automotive Research Inc 5404 Bandera Rd, San Antonio 78238 | (210) 706-1500 |
| U S Government-Ditcofaa 8535 Mission Rd, San Antonio 78214 | (210) 922-6042 |
| Wayne Langston Inc 6920 Montgomery, San Antonio 78239 | (281) 337-6785 |
| Isg Resources Inc 5033 Callaghan Rd, San Antonio 78228 | (210) 682-2000 |
| Intertek Automotive Research 5404 Bandera Rd, San Antonio 78238 | (210) 684-2310 |
| San Antonio Lab Center 5033 Callaghan Rd, San Antonio 78228 | (210) 682-2000 |
| Ihs Geotech 2405 Boardwalk St, San Antonio 78217 | (210) 822-9666 |