| Business | Phone |
| Summit Electric Supply 4780 Westway Dr, Corpus Christi 78408 | (361) 884-1888 |
| South Texas Valve & Controls 417 Sun Belt Dr F, Corpus Christi 78408 | (361) 289-6090 |
| Emerson Process Management 921 N Chaparral St, Corpus Christi 78401 | (361) 880-8145 |
| Measurment Resources Inc 3649 Leopard St, Corpus Christi 78408 | (361) 882-3444 |
| Johnson Controls Inc 117 Airport Rd, Corpus Christi 78405 | (361) 289-5594 |