| Business | Phone |
| Central Testing Co Inc 146 N Cities Service Hwy, Sulphur 70663 | (337) 625-7750 |
| Longview Inspections 4848 E Napoleon St, Sulphur 70663 | (337) 625-2016 |
| Metco 113 N Post Oak Rd, Sulphur 70663 | (337) 626-1606 |
| X-Ray Inspection Inc 3124 Metric Dr, Sulphur 70665 | (337) 882-0582 |