| Name | Web Site | GPA Member | GPSA Member |
|---|---|---|---|
| A+ Corporation | Visit | N | Y |
| Absolute Noise Control/EZ Pipe Wraps | Visit | N | Y |
| Accelerated Process Systems | Visit | N | Y |
| Accurate Gas Products, LLC | Visit | N | Y |
| Accurate Lab Audits, LLC | Visit | N | Y |
| AECOM | Visit | N | Y |
| Aeon PEC | Visit | N | Y |
| AF Global | Visit | N | Y |
| Afton Pumps, Inc. | Visit | N | Y |
| Airgas | Visit | N | Y |
| Alegacy Equipment, LLC | Visit | N | Y |
| Alfa Laval Niagara | Visit | N | Y |
| Allegiance Electric LLC | Visit | N | Y |
| Alliance Source Testing | Visit | N | Y |
| Allied Equipment, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Alpine Site Services | Visit | N | Y |
| Altus Midstream | Visit | Y | N |
| AMACS Process Tower Internals | Visit | N | Y |
| Amplify Process Safety, LLC | Visit | N | Y |
| Amspec | Visit | N | Y |
| Analytical Systems Keco | Visit | N | Y |
| Andeavor | Visit | Y | N |
| Anguil Environmental Systems | Visit | N | Y |
| Antero Resources Corp. | Visit | Y | N |
| Anvil Corporation | Visit | N | Y |
| Applied Bolting Technology | Visit | N | Y |
| Applied Control | Visit | N | Y |
| Aqseptence Group, Inc. | Visit | N | Y |
| Aramco Services Co. | Visit | Y | N |
| ARC Energy Equipment | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| ARC Energy Global, LLC | Visit | N | Y |
| Archrock, Inc. | Visit | N | Y |
| Arcosa Tank | Visit | N | Y |
| Ariel Corporation | Visit | N | Y |
| ARM Energy Midstream | Visit | Y | N |
| Atlas Copco Gas and Process | Visit | N | Y |
| Audubon | Visit | N | Y |
| AUX Sable Liquid Products Inc. | Visit | Y | N |
| AXH Air-Coolers | Visit | N | Y |
| Azota Ltd. | Visit | N | Y |
| Azure Midstream Energy LLC | Visit | Y | N |
| AZZ Lighting Systems Rig-A-Lite | Visit | N | Y |
| B&E Resources | Visit | N | Y |
| Bahrain National Gas Co. | Visit | Y | N |
| Baker & O'Brien, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Baker Hughes, a GE company | Visit | N | Y |
| Baltimore Aircoil Co. | Visit | N | Y |
| Barr Engineering Co. | Visit | N | Y |
| Barry D. Payne & Associates, Inc. | Visit | N | Y |
| Bartlett & West | Visit | N | Y |
| Bartlett Equipment Co. | Visit | N | Y |
| BASF Corp. | Visit | N | Y |
| BCCK Holding | Visit | N | Y |
| Bennett Construction, Inc. | Visit | N | Y |
| Bexar Energy Holdings, Inc. | Visit | N | Y |
| BGE, Inc. | Visit | N | Y |
| Bi-Con Engineering LLC | Visit | N | Y |
| Bidell Gas Compression | Visit | N | Y |
| Big Box Waste West Texas, LLC | Visit | N | Y |
| Bilfinger Westcon, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Black & Veatch Corp. | Visit | N | Y |
| Black Diamond Gathering | Visit | Y | N |
| Blackbird BI, LLC | Visit | N | Y |
| Blair Engineering | Visit | N | Y |
| Boardman, LLC | Visit | N | Y |
| Boardwalk Louisiana Midstream, LLC | Visit | Y | N |
| Bold Production Services, LLC | Visit | N | Y |
| Bowden Construction Co. Ltd. | Visit | N | Y |
| Brown & Root Industrial Services | Visit | N | Y |
| Bryan Research & Engineering, LLC | Visit | Y | Y |
| Buffalo Gap Instrumentation & Electrical | Visit | N | Y |
| Burns & McDonnell | Visit | N | Y |
| BWFS Industries, LLC | Visit | N | Y |
| C3 Resources, LLC | Visit | N | Y |
| CAID Industries | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Calibrate Capital Partners LLC | Visit | N | Y |
| Calpine Energy Solutions | Visit | N | Y |
| CAM Integrated Solutions | Visit | N | Y |
| Cameron LNG | Visit | Y | N |
| Cameron, A Schlumberger Company | Visit | N | Y |
| Candor Midstream, LLC | Visit | Y | N |
| Canyon Midstream Partners | - | Y | N |
| Cardinal Midstream, LLC | Visit | Y | N |
| CarolCon Enterprises | Visit | N | Y |
| Carrera Gas Company, L.L.C. | Visit | Y | N |
| Carver Pump | Visit | N | Y |
| Catalytic Combustion Corporation | Visit | N | Y |
| Catalytic Products International, Inc. | Visit | N | Y |
| Catamount Constructors | Visit | N | Y |
| Caterpillar, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| CECA Molecular Sieves/Arkema, Inc. | Visit | N | Y |
| CECO-Compressor Engineering Corp. | Visit | N | Y |
| Champion Process, Inc. | Visit | N | Y |
| Charbonneau Industries, Inc. | Visit | N | Y |
| Charger Energy Services LLC | Visit | N | Y |
| Chart Industries | Visit | N | Y |
| Chemical Products Industries, Inc. | Visit | N | Y |
| ChemTreat, Inc. | Visit | N | Y |
| Cheniere Energy | Visit | N | Y |
| Cherokee Integrations and Solutions | Visit | N | Y |
| Chevron North American Production | Visit | Y | N |
| Chiyoda Corp. | Visit | N | Y |
| Cimarex Energy Co. | Visit | Y | N |
| Circle B Measurement & Fabrication | Visit | N | Y |
| Citgo Petroleum Corp | Visit | Y | N |
| Name | Web Site | GPA Member | GPSA Member |
| Coastal Chemical Co., LLC | Visit | N | Y |
| Cogent Midstream, LLC | Visit | Y | N |
| Cogent Project Partners | Visit | N | Y |
| ColdStream Energy | Visit | N | Y |
| COMPRESSORtech | Visit | N | Y |
| ConocoPhillips | Visit | Y | N |
| Contek Solutions, LLC | Visit | N | Y |
| Corpac Steel Products Corp. | Visit | N | Y |
| Crestwood Midstream Partners LP | Visit | Y | N |
| Crossfire, LLC | Visit | N | Y |
| CryoSys | Visit | N | Y |
| CryoWorks, LLC | Visit | N | Y |
| CSD Engineers, LLC | Visit | N | Y |
| CSI Compressco LP | Visit | N | Y |
| Cummins, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Cyclone Steel Services LLC | Visit | N | Y |
| Dahlia | Visit | N | Y |
| Dave Allert Co. | Visit | N | Y |
| DCP Midstream, LP | Visit | Y | N |
| Dearing Compressor & Pump Co. | Visit | N | Y |
| Derrick Oneal Company LLC | Visit | N | Y |
| Devco Process Heaters | Visit | N | Y |
| Dew Point Control, LLC | Visit | N | Y |
| Diablo Analytical, Inc. | Visit | N | Y |
| Dickson Process Systems, Ltd. | Visit | N | Y |
| Discovery Midstream Partners | Visit | Y | N |
| DistributionNow | Visit | N | Y |
| Dollahon PR | Visit | N | Y |
| Dow Hydrocarbons and Resources LLC | Visit | Y | N |
| Duna USA | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Dura-Bar | Visit | N | Y |
| Durango Midstream LLC | Visit | Y | N |
| Durr MEGTEC, LLC | Visit | N | Y |
| DXP Enterprises Inc. | Visit | N | Y |
| E3 Consulting Services LLC | Visit | N | Y |
| EagleClaw Midstream | Visit | Y | N |
| Easter Owens | Visit | N | Y |
| Eastman | Visit | N | Y |
| Eaton Corporation | Visit | N | Y |
| Eaton Metal Products | Visit | N | Y |
| Echo Group, Ltd. | Visit | N | Y |
| Ecovapor Recovery Systems | Visit | N | Y |
| EDG, Inc. | Visit | N | Y |
| Element Materials Technology | - | N | Y |
| Elkhorn Gas Processing, LLC | Visit | Y | N |
| Name | Web Site | GPA Member | GPSA Member |
| EMD, Inc. | Visit | N | Y |
| Emerson | Visit | N | Y |
| Empire Gas Services | Visit | N | Y |
| ENABLE Midstream Partners | Visit | Y | N |
| EnCana Oil & Gas (USA), Inc | Visit | Y | N |
| Enchanted Rock | Visit | N | Y |
| Enerfin Resources Company | Visit | Y | N |
| Enerflex | Visit | N | Y |
| Energy Transfer Co. | Visit | Y | N |
| EnerSys Corporation | Visit | N | Y |
| EnFlex Group | Visit | N | Y |
| ENGlobal U.S. Inc. | Visit | N | Y |
| EnLink Midstream | Visit | Y | N |
| EnSiteUSA | Visit | N | Y |
| Enterprise Products Operating LP | Visit | Y | N |
| Name | Web Site | GPA Member | GPSA Member |
| Envent Technologies, LLC | Visit | N | Y |
| EPCON International | Visit | N | Y |
| EPIC | Visit | N | Y |
| ePumps Inc. | Visit | N | Y |
| Equinor ASA | Visit | Y | N |
| eSimulation, Inc. | Visit | N | Y |
| Everest Sciences | Visit | N | Y |
| Evolution Midstream, LLC | Visit | Y | N |
| EXTERRAN | Visit | N | Y |
| ExxonMobil/XTO | Visit | Y | N |
| Fabsco Shell & Tube, LLC | Visit | N | Y |
| Fabwell Corp. | Visit | N | Y |
| Federal Services, LLC | Visit | N | Y |
| FES-Southwest, Inc. | Visit | N | Y |
| FESCO, Ltd. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Field Industries LLC | Visit | N | Y |
| Files and Associates | Visit | N | Y |
| Filtration Technology Corp. | Visit | N | Y |
| Fives Cryo, Inc. | Visit | N | Y |
| Flatirons Field Services | Visit | Y | N |
| Flatrock Engineering and Environmental | Visit | N | Y |
| Fluid Flow Products, Inc. | Visit | N | Y |
| Fluor Enterprises, Inc. | Visit | N | Y |
| Forum Energy Technologies | Visit | N | Y |
| Freeman and Curiel Engineers, LLP | Visit | N | Y |
| Freese and Nichols, Inc. | Visit | N | Y |
| Fulton Thermal Corp. | Visit | N | Y |
| FW Murphy Production Controls | Visit | N | Y |
| Gas Analytical Services | Visit | N | Y |
| Gas Analytical Solutions, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Gas Equipment Co., Inc. | Visit | N | Y |
| Gas Innovations | Visit | N | Y |
| Gas Processors Report | Visit | Y | Y |
| Gas Processors Suppliers Association | Visit | N | Y |
| Gas Technology Corp. | Visit | N | Y |
| Gas Treatment Services B.V. | Visit | N | Y |
| GasTech Engineering, LLC | Visit | N | Y |
| GEA Systems North America LLC | Visit | N | Y |
| Gemstar, Inc. | Visit | N | Y |
| Geolex, Inc. | Visit | N | Y |
| GHD Services, Inc. | Visit | N | Y |
| Global Compressor, LP | Visit | N | Y |
| Goar Sulfur Services & Assistance | - | N | Y |
| GPA Midstream Association | Visit | Y | N |
| Graves Analytical Services, LLC | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Great Salt Plains Midstream | Visit | Y | N |
| Great Western Valve, Inc. | Visit | N | Y |
| GTC Vorro | Visit | N | Y |
| GTUIT | Visit | N | Y |
| Gulf Coast Chemical, LLC | Visit | N | Y |
| Gulf Coast Engineered Solutions, Inc. | Visit | N | Y |
| Gulf Interstate Engineering | Visit | N | Y |
| Gulf Publishing Co. | Visit | N | Y |
| H+M Industrial EPC | Visit | N | Y |
| H2W United, LLC | Visit | N | Y |
| Halff TriTex, Inc. | Visit | N | Y |
| Hargrove Engineers + Constructors | Visit | N | Y |
| Heat Transfer Specialists, Inc. | Visit | N | Y |
| Heatec, Inc. | Visit | N | Y |
| Heath Consultants Incorporated | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Hellervik Midstream | Visit | Y | N |
| Hengye Inc. | Visit | N | Y |
| Holloman Corporation | Visit | N | Y |
| Holloway Technical Services | Visit | N | Y |
| Honeywell UOP | Visit | N | Y |
| Hougland Inc. | - | N | Y |
| Houston Integrity Consultants | Visit | N | Y |
| Howard Energy Midstream Partners | Visit | Y | N |
| Howard Energy Partners | Visit | N | Y |
| Howden Roots, LLC | Visit | N | Y |
| HTS Rocky Mountains | Visit | N | Y |
| Hunt, Guillot & Associates | Visit | N | Y |
| Hunter Buildings | Visit | N | Y |
| Huntsman Corp. | Visit | N | Y |
| Hydrocarbon Measurement Consultants, Inc. | - | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| I & S Technical Resources, Inc. | - | N | Y |
| ICA Fluor | Visit | N | Y |
| Industrial Distributors, Inc. | Visit | N | Y |
| INEOS GAS/SPEC Technology Group | Visit | N | Y |
| Infinity Project Management, Inc. (IPM) | Visit | N | Y |
| INNIO Waukesha Gas Engines Inc. | Visit | N | Y |
| Integral Dynamics | Visit | N | Y |
| Interra Global Corp. | Visit | N | Y |
| Interstate Treating, Inc. | Visit | N | Y |
| ISTI Plant Services | Visit | N | Y |
| J-W Power Company | Visit | N | Y |
| J. H. Foglietta Consulting, LLC | Visit | N | Y |
| J.S. James Co. | Visit | N | Y |
| Jasper Ventures, Inc. | Visit | N | Y |
| JFE Engineering Corporation | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| JGC Corporation | Visit | N | Y |
| John Zink Company, LLC | Visit | N | Y |
| Johnson Matthey | Visit | N | Y |
| Johnson Petrotech Services, Inc. | - | N | Y |
| Jonell, Inc. | Visit | N | Y |
| Joule Processing, LLC | Visit | N | Y |
| JP3 Measurement | Visit | N | Y |
| Kahuna Ventures | Visit | N | Y |
| Kams, Inc. | Visit | N | Y |
| Kane Environmental Engineering | - | N | Y |
| KBR | Visit | N | Y |
| Kiewit Energy Group | Visit | N | Y |
| Kimley-Horn | Visit | N | Y |
| Kinder Morgan | Visit | Y | N |
| Kingfisher Midstream LLC | - | Y | N |
| Name | Web Site | GPA Member | GPSA Member |
| Knighten Industries, Inc. | Visit | N | Y |
| Koch-Glitsch LP | Visit | N | Y |
| Kodiak Gas Services | Visit | N | Y |
| KP Engineering, LP | Visit | N | Y |
| Kuwait Petroleum Corporation | Visit | Y | N |
| L.A. Turbine | Visit | N | Y |
| Laboratory Services | - | N | Y |
| LCM Industries, Inc. | Visit | N | Y |
| Lexicon, Inc. | Visit | N | Y |
| Liberty Midstream Solutions | Visit | Y | N |
| Lilly Consulting | Visit | N | Y |
| Linde Engineering North America Inc. | Visit | N | Y |
| Lindsayca Solutions | Visit | N | Y |
| LISEGA, Inc. | Visit | N | Y |
| Logic Masterminds, LLC | Visit | Y | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Lyondell Basell Industries | Visit | Y | N |
| M Chemical Company | Visit | N | Y |
| M J & H Fabrication | Visit | N | Y |
| M4 Equipment | Visit | N | Y |
| M5 Louisiana | Visit | Y | N |
| MACH Energy Services, LLC | Visit | N | Y |
| Maddox Industrial Group | Visit | N | Y |
| Mangan, Inc. | Visit | N | Y |
| Marathon Petroleum Corp. | Visit | Y | N |
| MarkWest Energy Partners L.P. | Visit | Y | N |
| Marsh & McLennan Agency, Southwest Region | Visit | N | Y |
| Martin Midstream Partners, LP | Visit | Y | N |
| Master Corporation | Visit | N | Y |
| Matrix PDM Engineering | Visit | N | Y |
| Mayekawa USA, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| McCartney Gas Advisors, LLC | - | N | Y |
| McClung Energy Services | Visit | N | Y |
| McClure Energy Solutions | Visit | N | Y |
| McDaniel Technical Services, Inc. | Visit | N | Y |
| McDermott | Visit | N | Y |
| Mears Group, Inc. | Visit | N | Y |
| Merichem | Visit | N | Y |
| Meritage Midstream Services II, LLC | Visit | Y | N |
| Metal Goods Manufacturing Co. Inc. | Visit | N | Y |
| Midcoast Energy | Visit | Y | N |
| Midstream Energy Group, Inc. | Visit | N | Y |
| Miller Truck Lines Specialized | Visit | N | Y |
| MIRATECH Group, LLC. | Visit | N | Y |
| Mitsubishi Heavy Industries Compressor International | Visit | N | Y |
| Mobile Analytical Laboratories, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| MODEC International, Inc. | Visit | N | Y |
| Momentum Midstream | Visit | Y | N |
| Monico Monitoring, Inc. | Visit | N | Y |
| Moore Control Systems, Inc. | Visit | N | Y |
| Morrow Energy | Visit | N | Y |
| Movilab, S.A. de C.V. | Visit | N | Y |
| MRC Global Inc. | Visit | N | Y |
| Mueller Environmental Designs | Visit | N | Y |
| Muse, Stancil & Co. | Visit | Y | N |
| Mustang Cat | Visit | N | Y |
| Mustang Gas Products, LLC | Visit | Y | N |
| Mustang Sampling | Visit | N | Y |
| Nalco Water | Visit | N | Y |
| Navitas Midstream Partners | Visit | Y | N |
| Neuman & Esser USA, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Neumann Midstream Consulting | - | N | Y |
| New Industries, LLC | Visit | N | Y |
| New Tech Global Ventures | Visit | N | Y |
| Nexo Solutions | Visit | N | Y |
| Nicholas Consulting Group, Inc. | Visit | N | Y |
| Nitro-Lift Technologies LLC | Visit | N | Y |
| North Shore Steel | Visit | N | Y |
| NorthStar Energy Services, Inc. | Visit | N | Y |
| Norwood S&S, LLC | Visit | N | Y |
| NTACT Operations, LLC | Visit | N | Y |
| Nuevo Midstream Dos, LLC | Visit | Y | N |
| Oasis Midstream Services | Visit | Y | N |
| Oil-GasTech | Visit | N | Y |
| OK Leasing Latin American Energy LLC | - | N | Y |
| Oliver Equipment Co. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Omni Flow Computers, Inc. | Visit | N | Y |
| ONEOK Partners | Visit | Y | N |
| Optimized Gas Treating, Inc. | Visit | N | Y |
| Optimized Process Designs | Visit | N | Y |
| Optimized Process Furnaces | Visit | N | Y |
| Orbital Gas Systems | Visit | N | Y |
| Osynergy | Visit | N | Y |
| OTSO | Visit | N | Y |
| Oxy USA, Inc. | Visit | Y | N |
| Pantechs Laboratories, Inc. | Visit | N | Y |
| Paradigm Controls of Texas | Visit | N | Y |
| Paratherm - Heat Transfer Fluids | Visit | N | Y |
| Parker IPF (PECO) Parker Hannifin Corp. | Visit | N | Y |
| Pasadyn, Inc. | Visit | N | Y |
| Patriot Process Equipment | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Payne-Huber Engineering, Inc. | Visit | N | Y |
| Peak AI Solutions | Visit | N | Y |
| Pearson Adair & Co. | Visit | Y | N |
| PEC Safety | Visit | N | Y |
| PERC Engineering, LLC | Visit | N | Y |
| Petral Consulting Co. | Visit | N | Y |
| PetrolValves, LLC | Visit | N | Y |
| Petron Asia Energy PTE Ltd. | Visit | N | Y |
| PetroSkills/John M. Campbell | Visit | N | Y |
| Phillips 66 | - | Y | N |
| Phoenix Park Gas Processors Ltd. | Visit | Y | N |
| Pine River Energy Services, LLC | Visit | N | Y |
| Pioneer Natural Resources USA, Inc. | Visit | Y | N |
| Plains All American | Visit | Y | N |
| PLC Construction Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Polaris Services, LLC | Visit | N | Y |
| Precise Engineering, Inc. | Visit | N | Y |
| Precision Drilling a div of BMI | Visit | N | Y |
| Prime Controls, LP | Visit | N | Y |
| Priority Power Management, LLC | Visit | N | Y |
| Prism Midstream LLC | - | Y | N |
| Process Vision, Inc. | Visit | N | Y |
| Propak Systems Ltd. | Visit | N | Y |
| ProSep Inc. | Visit | N | Y |
| PSI (Process Solutions Integration) | Visit | N | Y |
| Puffer Sweiven | Visit | N | Y |
| Pyramid E&C LLC | Visit | N | Y |
| Q.B. Johnson Manufacturing, Inc. | Visit | N | Y |
| Q2 Technologies, LLC | Visit | N | Y |
| QPS Engineering | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Quadra Chemicals, Inc. | Visit | N | Y |
| QuantityWare GmbH | Visit | N | Y |
| Quorum Business Solutions | Visit | N | Y |
| R & R Engineering Co., Inc. | - | N | Y |
| R Construction | Visit | N | Y |
| R&H Technical Sales, Inc. | Visit | N | Y |
| Ranger Plant Constructional Co. Inc. | Visit | N | Y |
| Reagan Power & Compression LLC | Visit | N | Y |
| Red Ball Technical Gas Services | Visit | N | Y |
| Red Cedar Gathering Co. | Visit | Y | N |
| Redd Ridge Consulting, LLC | Visit | N | Y |
| Ref-Chem LP | Visit | N | Y |
| Regard Resources Co., Inc. | Visit | N | Y |
| Relevant Solutions | Visit | N | Y |
| Reset Energy | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Resource Energy Equipment | Visit | N | Y |
| Reverse Technology Resources LLC | - | N | Y |
| Rhine Ruhr Pty, Ltd. | Visit | N | Y |
| River City Engineering | Visit | N | Y |
| Ro-Flo Compressors, LLC | Visit | N | Y |
| Ross Engineering, LLC | Visit | N | Y |
| Roto-Versal | Visit | N | Y |
| Rotor-Tech, Inc. | Visit | N | Y |
| Royal Filter Mfg. Co., Inc. | Visit | N | Y |
| RT Technical Solutions | Visit | N | Y |
| Ryno Energy Partners, LP | Visit | Y | N |
| S & B Engineers and Constructors, Ltd. | - | N | Y |
| Saddle Butte Pipeline, LLC | Visit | Y | N |
| Salof Ltd., Inc. | Visit | N | Y |
| Samuel Engineering, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Sargent & Lundy | Visit | N | Y |
| Saulsbury Industries, Inc. | Visit | N | Y |
| Scelerin Heaters, LLC | Visit | N | Y |
| Schultz Process Services, Inc. | Visit | N | Y |
| Schwob Energy Services | Visit | N | Y |
| Scott Measurement Service, Inc. | Visit | N | Y |
| SEC Energy Products & Services, LP | Visit | N | Y |
| Select Engineering, Inc. | Visit | N | Y |
| Selective Adsorption Associates, Inc. | Visit | N | Y |
| SemGas, LP | Visit | Y | N |
| Sendero Midstream Partners, LLC | Visit | Y | N |
| Sepra-Chem Corp. | Visit | N | Y |
| SERO PumpSystems, Inc. | Visit | N | Y |
| Shamrock Gas Analysis | Visit | N | Y |
| Shawcor | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Shermco Industries | Visit | N | Y |
| Shrieve Chemical Products, Inc. | Visit | N | Y |
| Siemens | Visit | N | Y |
| SIGIT Operating Co. | Visit | N | Y |
| Sigma Thermal, Inc. | Visit | N | Y |
| Simplified Rail Logistics | Visit | N | Y |
| Single Buoy Moorings | Visit | N | Y |
| SME Process Solution | Visit | N | Y |
| Smithco Engineering, Inc. | Visit | N | Y |
| SNC-Lavalin | Visit | N | Y |
| Solar Turbines, Inc. | Visit | N | Y |
| Solomon Associates | Visit | N | Y |
| Spartan Energy Partners | Visit | N | Y |
| SpectraSensors an Endress+Hauser Co. | Visit | N | Y |
| Spectrum LNG, LLC | - | Y | N |
| Name | Web Site | GPA Member | GPSA Member |
| Spitzer Industries | Visit | N | Y |
| SPL, Inc. | Visit | N | Y |
| Stantec | Visit | N | Y |
| Strategic Automation Services, LLC | Visit | N | Y |
| Streamline Innovations, Inc. | Visit | Y | N |
| Stress Engineering Services | Visit | N | Y |
| STS Consulting Services | Visit | N | Y |
| STV Energy Services, Inc. | Visit | N | Y |
| Sulfur Operation Support, Inc. | Visit | N | Y |
| Sullivan and Sons, Inc. | Visit | N | Y |
| SULPETRO, Inc. | Visit | N | Y |
| Sulzer Chemtech | Visit | N | Y |
| Summit Engineering Services, Inc. | Visit | N | Y |
| Sundyne Corporation | Visit | N | Y |
| Sunland Construction, Inc. | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Superior Energy Systems, Ltd. | Visit | N | Y |
| Superior Pipeline Co. | Visit | Y | N |
| T.F. Hudgins, Inc. | Visit | N | Y |
| Tapstone Energy, LLC | Visit | Y | N |
| Targa Resources, Inc. | Visit | Y | N |
| Taylor Forge Engineered Systems | Visit | N | Y |
| TechnipFMC | Visit | N | Y |
| TECO-Westinghouse | Visit | N | Y |
| TEG Solutions, LLC | Visit | N | Y |
| Terracon Consultants, Inc. | Visit | N | Y |
| Texas Oil Electric, Inc. | Visit | N | Y |
| Texas OilTech Laboratories, LP | Visit | N | Y |
| Texas Turbine, Inc. | Visit | N | Y |
| TM-EMS, LLC | Visit | N | Y |
| TMCO Operating, LLC | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Tomcej Engineering Inc. | Visit | N | Y |
| TorcSill Foundations | Visit | N | Y |
| Torrent Energy Services | Visit | N | Y |
| Total Energy Corp. | Visit | N | Y |
| Total SA | Visit | Y | N |
| Total Valve & Equipment | Visit | N | Y |
| Tower Force | Visit | N | Y |
| Transcend Solutions, LLC | Visit | N | Y |
| Transect LLC | Visit | N | Y |
| TransTech Energy | Visit | N | Y |
| TransTex Treating | Visit | N | Y |
| Tri-Point Oil & Gas Production Systems | Visit | N | Y |
| Trimeric Corp. | Visit | N | Y |
| Tryer Process Equipment | Visit | N | Y |
| Tulco Oils | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| Tulsa Heaters Midstream | Visit | N | Y |
| UEC, LLC | Visit | N | Y |
| Unison Industrial Solutions | Visit | N | Y |
| United Gas Derivatives Co. | Visit | Y | N |
| United Steel Structures, Inc. | Visit | N | Y |
| Univar Solutions | Visit | N | Y |
| UniversalPegasus International | Visit | N | Y |
| Upstream Development and Engineering, Inc. | Visit | N | Y |
| USA Compression | Visit | N | Y |
| Vapor Point | Visit | N | Y |
| Vavco, LLC | Visit | N | Y |
| VGas, LLC | Visit | N | Y |
| Viking Pump | Visit | N | Y |
| Vinson Process Controls | Visit | N | Y |
| Virtual Materials Group | Visit | N | Y |
| Name | Web Site | GPA Member | GPSA Member |
| VME | Visit | N | Y |
| VUV Analytics, Inc. | Visit | N | Y |
| Wagner Power Systems | Visit | N | Y |
| Walker Industrial | Visit | N | Y |
| Wanzek Construction, Inc. | Visit | N | Y |
| Washington Iron Works | Visit | N | Y |
| Wasson-ECE | Visit | N | Y |
| Watson Millican & Co. | Visit | Y | N |
| Waukesha Pearce Industries | Visit | N | Y |
| Western Filter Co., Inc. | Visit | N | Y |
| Western Midstream Partners, LP | Visit | Y | N |
| Williams | Visit | Y | N |
| WinSim Inc. | Visit | N | Y |
| Wood | Visit | N | Y |
| Woodland Midstream LLC | Visit | Y | N |
| Name | Web Site | GPA Member | GPSA Member |
| Worldwide Exchangers, LLC | Visit | N | Y |
| Worley Group Inc. | Visit | N | Y |
| WR Grace | Visit | N | Y |
| WSP | Visit | N | Y |
| WTG Gas Processing L.P. | Visit | Y | N |
| YAK Access | Visit | N | Y |
| York Process Systems | Visit | N | Y |
| ZAP Engineering & Construction Services, Inc. | Visit | N | Y |
| Zedi US | Visit | N | Y |
| Zeeco, Inc. | Visit | N | Y |
| Zeochem | Visit | N | Y |
