| Business | Phone |
| Waatts Inc 724 S Polk St, Amarillo 79101 | (806) 374-9266 |
| Xium Corp 4720 Ne 24th Ave, Amarillo 79107 | (806) 383-4140 |
| Tsc Engineering Co 905 S Fillmore St # 620, Amarillo 79101 | (806) 372-8700 |
| Patterson & Ellett 1504 W 10th Ave, Amarillo 79101 | (806) 376-9678 |
| Oller Engineering Inc 203 W 8th Ave, Amarillo 79101 | (806) 331-3465 |
| C H Guernsey & Co Inc 226 S Timbercreek Dr, Amarillo 79118 | (806) 622-8003 |