- ACFM Inc
- Air & Gas Svc
- Air & Gas Systems Inc
- BME Fabrication
- Carrington Engineering
- DMD Roots
- Fluid Technology Inc
- H R Enterprises
- Hawk Supply Inc
- Houston Service Industries
- Houston Service Industries
- Kerley & Sears Inc
- Kerley & Sears Inc
- Kerley & Sears Inc
- Knape Associates
- Lamson-Gardner Denver Blowers
- Lamson-Gardner Denver Blowers
- Mechanical Technologies
- R-Co Inc
- Restaurant Hoods & Ventilation
- Roots Floor Sales
- Sonic Air
- Southwestern Pneumatic Inc
- Turblex Inc
