| Business | Phone |
| Chromatech Scientific Corp 650 W Bough Ln 150, Houston 77024 | (713) 818-0605 |
| Tecmag Inc 10161 Harwin Dr 150, Houston 77036 | (713) 667-8747 |
| Pac Lp 8824 Fallbrook Dr, Houston 77064 | (281) 940-1803 |
| Van London Co Inc 6103 Glenmont Dr, Houston 77081 | (713) 772-6641 |