| 4B Components, Ltd. | 1613 |
| A.W. Chesterton Co. | 1636 |
| ADF Engineering, Inc. | 831 |
| AGRA Industries, Inc. | 1823 |
| Aldon Company Inc. | 427 |
| Alfa Laval, Inc. | 735, 737 |
| Alliance Technical Group | 1432 |
| Allied Valve & Instrumentation | 423 |
| American Coalition for Ethanol | 501 |
| AmeriWater | 833 |
| Amertech Tower Services | 700 |
| Anderson Chemical Co. | 2002, 2003 |
| Angel Yeast Co., Ltd. | 605 |
| Antora Energy | 1704 |
| Apache Industrial Services, Inc. | 213 |
| Apache Stainless Equipment Corporation | 1723 |
| Apex Water & Process | 1500, 1502 |
| Applied Material Solutions, Inc. | 635 |
| Applied Products Thermal Products Group | 934 |
| ArrowUp | 1515 |
| Axion | 1232 |
| Baron Filtration Co., Inc. | 1713 |
| BASF Corporation | 1521 |
| Battelle | 1201 |
| Behlen Grain Systems | 832 |
| Bestzyme Corporation | 1001 |
| BetaTec Hop Products, Inc. | 1421 |
| Beyond (a christianson company) | 1435 |
| Bioelectrica | 336 |
| BioFuels Automation | 1413 |
| BioIntelligence Technologies Inc. | 1302 |
| BOSS Railcar Movers | 1826 |
| Brawn Mixer,Inc. | 1709 |
| Brentwood Industries | 2008 |
| BRUKS SIWERTELL | 712 |
| Buhler, Inc. | 613 |
| Bulk Conveyors, Inc. | 1606 |
| Burns & McDonnell | 1106 |
| Caldwell/Preload | 634 |
| Campbell-Sevey | 1727 |
| CapCO2 Solutions | 1212 |
| Carbis Solutions Group, LLC | 1013 |
| Carboline Co. | 632 |
| CEM Corporation | 1401 |
| Chase Nedrow Industries | 1423 |
| Chemmart, LLC | 1003 |
| ChemTreat, Inc. | 1033 |
| Christianson PLLP | 1437 |
| CL Construction | 426 |
| Cleaver-Brooks | 2011, 2010 |
| CNC Flow Control | 1711 |
| CompuWeigh Corporation | 1300 |
| Conveyor Engineering & Mfg. Co. | 2000 |
| Cooling Tower Depot, Inc. | 1301 |
| CPM Crown Global Companies | 1714 |
| CTE Global, Inc. | 1323, 1321 |
| Custom Concrete Specialists | 637 |
| CWS Construction Services | 802 |
| dataPARC | 1430 |
| Decker Electric, Inc. | 1228 |
| Diamond R Industries | 434 |
| Direct Companies | 906 |
| Dowco Valve Company | 1405, 1403 |
| Durr Systems, Inc. | 823 |
| DXP Enterprises | 1513 |
| Eagle Services Corporation | 1031 |
| Eco Industrial Services | 2032 |
| EcoEngineers | 500, 502 |
| Ecolab, Inc. | 1237 |
| Emerson Measurement | 2026, 2025, 2027 |
| Energy Integration, Inc. | 603 |
| Enviro-Dyne Industrial Services | 2036 |
| EnviroLogix, Inc. | 1812 |
| ESC Spectrum | 531 |
| Fagen, Inc. | 723, 721 |
| Ferm Solutions, Inc. | 836 |
| FEW Exhibit Sales Center | 227 |
| Flottweg Separation Tech | 935 |
| Fluid Quip Technologies, LLC | 1215 |
| FNA Inc. | 1129 |
| Foundation Analytical Laboratory, Inc. | 937 |
| Franzenburg Centrifuge | 513 |
| G Tech USA | 1633 |
| GALLOP | 306 |
| GEA Group | 1436 |
| GEAPS | 1504 |
| Gilbert Industries, Inc. | 703 |
| Global Refractory Installers & Suppliers | 1132 |
| Growth Energy | 1121 |
| H2O Innovation | 908 |
| Hengye, Inc. | 727 |
| Howden | 601 |
| HTH Companies | 1830 |
| Hupp Electric Motors | 704 |
| Hydrite Chemical Co. | 706 |
| Hydro-Thermal Corporation | 1402 |
| ICM, Inc. | 921 |
| IFF | 1021 |
| incite.ag | 1433 |
| Industrial Equipment & Parts | 536 |
| Innospec Fuel Specialties | 308 |
| Innovative Plant Solutions, Inc. | 1303 |
| Innovative Technologies | 1501 |
| Integrated Global Services | 1128 |
| IntegroEnergy Group, Inc. | 1503 |
| Interra Global Corporation | 1203 |
| Interstates, Inc. | 1306 |
| J&D Construction, Inc. | 807 |
| J.C. Ramsdell Enviro Services, Inc. | 733 |
| Jackson Industrial Construction | 622 |
| Jacobs Global | 312 |
| Jasper Engineering & Equipment Company | 413 |
| KATZEN International, Inc. | 1109, 1208 |
| Keit Industrial Analytics | 527 |
| Kemin Bio Solutions | 1537 |
| KFI Engineers | 626 |
| Knight Material Technologies | 1127 |
| Knobelsdorff Electric | 327 |
| Koch Engineered Solutions | 2013, 2012 |
| Komax Systems, Inc. | 1409 |
| Kurita America | 1101 |
| L&M Ethanol Maintenance Contracting, Inc. | 2016, 2015 |
| Laidig Systems, Inc. | 834 |
| Lallemand Biofuels & Distilled Spirits | 915 |
| Lapis Carbon Solutions | 1007 |
| Leaf by Lesaffre | 1415 |
| Lotus Mixers, Inc./LOTUS Process Group, LLC | 932 |
| Louisville Dryer Company | 837 |
| LucasE3 Engineering | 1627 |
| Ludeca, Inc. | 2031 |
| Maas Companies, Inc. | 904 |
| Macon Construction | 1337 |
| Malloy Electric | 1813 |
| Mapcon Technologies, Inc. | 936 |
| Mason Manufacturing, LLC | 926 |
| Mechanical Systems, Inc. | 1800 |
| Merjent, Inc. | 1035 |
| Metrohm USA | 529 |
| Midland Scientific, Inc. | 702 |
| Mid-States Companies | 608 |
| Midwest Cooling Tower Services | 1335 |
| Midwest Cooling Towers, Inc. | 827 |
| Miller Mechanical Specialties, Inc. | 2007, 2006 |
| Minnesota Bio-Fuels Association, Inc. | 829 |
| Modern | 506 |
| MoistTech Corp. | 1205 |
| Mole Master Services Corporation | 828, 826 |
| Montrose Environmental Group, Inc. | 1400 |
| NABP | 813 |
| Nalco Water, an Ecolab Company | 1235 |
| National Corn-to-Ethanol Research Center | 1313 |
| Nelson Baker Biotech | 1207 |
| Nestec, Inc. | 535 |
| Neuman & Esser USA, Inc. | 403 |
| Novaspect, Inc. | 2024, 2023 |
| Novonesis | 1221 |
| Oculyze Automation GmbH | 537 |
| Olsson | 1113 |
| Oxidizers, Inc. | 615 |
| P1 Service, LLC | 509 |
| Paget Equipment Co. | 1427 |
| Pebco, Inc. | 322 |
| Pelican Energy Consultants | 1605 |
| PHARMAX | 507 |
| Phase Biolabs, Inc. | 1532 |
| Phibro Ethanol | 715 |
| Piller TSC Blower Corporation | 1731 |
| Pinion | 1134 |
| Pinnacle Engineering, Inc. | 731 |
| Pivot Clean Energy Co. | 1534 |
| PRAJ Industries Limited | 1315 |
| Precision Rotary Equipment | 1429 |
| Premium Plant Services, Inc. | 1115 |
| Proflow Pumping Solutions | 120 |
| ProQuip, Inc. | 1029 |
| PROtect, LLC | 428 |
| RailPros Inc. | 437 |
| Rasmussen Mechanical Services | 337, 126 |
| RCM Engineering-Thermal Kinetics | 900 |
| Refractory Service, Inc. | 2014 |
| Renewable Fuels Association | 901 |
| Rentech Boiler Systems, Inc. | 1729 |
| REYMSA Cooling Towers | 2009 |
| Robinson Fans, Inc. | 701 |
| RTP Environmental Associates, Inc. | 606 |
| Ryan & Associates, Inc. | 930 |
| S T Cotter Turbine Services | 430 |
| Schad Refractory Construction Co. | 835 |
| Schimberg Company | 1329, 1327, 1331 |
| Schroeder Environmental Cleaning Services Inc. | 335 |
| Scott Equipment Company | 805 |
| SCS Global Services | 902 |
| Seaton Construction Group | 1230 |
| Sentrimax Centrifuges (USA), Inc. | 2029 |
| Separator Technology Solutions | 1333 |
| SEPCO Sealing Equipment Products Co., Inc. | 1133, 1131 |
| SES, LLC. Superior Environmental Solutions | 1735 |
| SGS North America, Inc. | 1304 |
| Shandong Longda Bio-products Co., Ltd. | 508 |
| Siemens Industry, Inc. | 1815 |
| Simoneau Sterling Midwest | 1507 |
| Solar Turbines Incorporated | 1623 |
| Solutions 4 Manufacturing | 1428 |
| SonicAire | 2030 |
| SOS Leak Repair | 523 |
| Spraying Systems Co. | 815 |
| Standard Polymers | 1705 |
| Stantec | 1820 |
| Stewart & Stevenson - Rail King | 607 |
| StoneAge Tools | 1835, 1833, 1837 |
| Strobel Companies | 124 |
| Sukup Manufacturing Co. | 809 |
| Sulzer Chemtech USA Inc. | 2017, 2018 |
| Sulzer Pumps Solutions, Inc. | 2020, 2019 |
| Summit Lubrication | 801 |
| The CMM Group | 1536 |
| The New York Blower Company | 421 |
| The Walling Company | 503 |
| Think Environmental | 1732 |
| TMI Coatings Inc. | 409 |
| Trace Environmental Systems, Inc. | 630 |
| Tracerco | 636 |
| Trackmobile Railcar Movers | 321, 1999 |
| Tranter, Inc. | 521 |
| Trident Automation, Inc. | 1819 |
| Trihydro Corporation | 928 |
| Trucent | 821 |
| VAA, LLC | 729 |
| Veolia Water Technologies & Solutions | 621 |
| Victory Energy Operations, LLC | 504 |
| Viking Automatic Sprinkler Co. | 526 |
| Vogelbusch USA, Inc. | 803 |
| VTR Biotech | 313 |
| Warrior Mfg., LLC | 830 |
| Water Tech, Inc. | 909 |
| WCR Incorporated | 1506, 1508 |
| Westmor Industries, LLC | 1426 |
| Whitefox Technologies Limited | 1015 |
| Williams Refractory Services, Inc. | 1234 |
| WINBCO | 1407 |
| Wiss, Janney, Elstner Associates, Inc. | 1226 |
| World Kinect Energy Services | 1135 |
| Woven Metal Products | 1434 |
| Xylogenics, Inc. | 1721 |
| Zenviro Tech US, Inc. | 1535 |
| Zeochem, LLC | 800 |