| ADF Engineering, Inc. | 428 |
| Advanced Power Dynamics, Inc. | 1717 |
| AGRA Industries, Inc. | 608 |
| Air Resource Specialists, Inc. | 1032 |
| AirPro Fan & Blower Company | 1720 |
| Alfa Laval, Inc. | 1723 |
| Alliance Technical Group | 2038 |
| Allied Instrumentation | 1531 |
| Allied Tank And Construction | 211 |
| Allied Valve, Inc. | 1529 |
| American Coalition for Ethanol | 1201 |
| Anderson Chemical Co. | 2040 |
| Angel Yeast Co., Ltd. | 1711 |
| Antea Group | 1709 |
| Apache Industrial Services, Inc. | 1702 |
| Apache Stainless Equipment Corporation | 1527 |
| Apollo Water Services | 935 |
| Applied Material Solutions, Inc. | 533 |
| Applied Products Thermal Products Group | 200 |
| Arktos Environmental | 228 |
| ASI Industrial | 1700 |
| Aspen Aerogels | 1233 |
| Baldwin Supply Company | 210 |
| Baron Filtration Co., Inc. | 234 |
| Barr Engineering Co. | 1301 |
| BASF Enzymes, LLC | 421 |
| Battelle | 700 |
| Bepex International, LLC | 2013 |
| BetaTec Hop Products, Inc. | 1421 |
| Beyond (a christianson company) | 735 |
| BioFuels Automation | 1223 |
| Bioleap, Inc | 801 |
| Bion Companies | 513 |
| Bird Control Group | 1600 |
| Boerger, LLC | 2017 |
| Border States Electric Supply | 2036 |
| Boss RailCar Movers | 2051, 2052 |
| Brown Tank, LLC | 1332 |
| BRUKS SIWERTELL | 1007 |
| BS&B Pressure Safety Management, LLC | 1202 |
| Buckman | 713 |
| Bulk Conveyors, Inc. | 824 |
| Buresh Building Systems | 1728 |
| Burns & McDonnell | 834 |
| Bushel | 1030 |
| Butterworth, Inc. | 730 |
| Campbell-Sevey | 1428 |
| Carbon America | 1001 |
| Carter Day International | 908 |
| CCS Group | 1612 |
| Chase Nedrow Industries | 507 |
| Chem Aqua, Inc. | 213 |
| ChemTreat, Inc. | 232 |
| Chicago Valves & Controls | 2043 |
| Christianson PLLP | 734 |
| Christy Catalytics, LLC | 402 |
| CIBO Technologies | 202 |
| Clariant Corporation | 1413 |
| Clear Air Enviro-Services | 532 |
| ClearFlame Engine Technologies | 1722 |
| Cleaver-Brooks | 1726 |
| Climate Engineers | 1630 |
| CompuWeigh Corporation | 601 |
| Conveyor Engineering & Mfg. Co. | 236 |
| Cooling Technology Institute (CTI) | 1406 |
| Cooling Tower Depot, Inc. | 503 |
| CPM | 1614 |
| Crown Americas-Crown Iron Works | 1515 |
| CTE Global, Inc. | 1221 |
| C-TEC AG | 733 |
| Cytiva | 2106 |
| D3MAX, LLC | 807, 221 |
| Decker Electric, Inc. | 328 |
| Delta Southern Railroad Inc. | 207 |
| Demo Plus, Inc. | 1205 |
| Diesel Locomotive Company | 331 |
| Direct Companies | 1105 |
| Dowco Valve Company | 1104 |
| DraCool-USA | 535 |
| Durr Systems, Inc. | 623 |
| DXP Enterprises | 1307 |
| Eagle Services Corporation | 931 |
| Eco Specialized Services | 1231 |
| Eco-Energy, LLC | 721 |
| EcoEngineers | 1435 |
| Ecolab, Inc. | 1133 |
| EFCO USA, Inc. | 1329 |
| EGM, Inc. | 432 |
| Electro-Sensors, Inc. | 502 |
| Elysian Carbon Management | 1405 |
| Emerson | 2024, 2025 |
| Emissions Analytics LLC | 302 |
| Energy Integration, Inc. | 2016 |
| Enerquip, LLC | 1706 |
| Enertech Solutions, Inc. | 1715 |
| Enviro-Dyne Industrial Services | 227 |
| ESC Spectrum | 1128 |
| Ethanol Producer Magazine | 235 |
| Fagen, Inc. | 1321 |
| FCX Performance | 1602 |
| Federal Appraisal & Consulting, LLC | 2111 |
| Ferm Solutions, Inc. | 725 |
| Firefly Reliability | 1633 |
| Flottweg Separation Tech | 833 |
| Fluid Process Equipment, Inc. | 1724 |
| Fluid Quip Technologies, LLC | 1115 |
| Foss & Company | 314 |
| Foundation Analytical Laboratory, Inc. | 835 |
| Franzenburg Centrifuge | 407 |
| G Tech USA | 1012 |
| Gagnon, Inc. | 335 |
| GEA North America | 1434 |
| Genesis III | 631 |
| Gilbert Industries, Inc. | 1126 |
| Global Refractory Installers & Suppliers | 1130 |
| Good Land Industrial | 201 |
| Gorman-Rupp Pumps | 306 |
| GPM, Inc. | 1707 |
| Grace Consulting, Inc. | 2044 |
| Growth Energy | 1021 |
| H2O Innovation | 702 |
| Harvesting Technology, LLC | 1504 |
| Hayward Tyler, Inc. | 1033 |
| Hengye, Inc. | 1109 |
| HK Solutions Group | 1415 |
| Hoffmann Inc. & Wolf Material Handling Systems | 1613 |
| Howden | 1102 |
| Hupp Electric Motors | 508 |
| Hydrite Chemical Co. | 603 |
| Hydro-Thermal Corporation | 501 |
| ICM, Inc. | 821 |
| Idaho National Laboratory | 413 |
| IFF | 921 |
| imagoAi | 1503 |
| Industrial Contractors, Inc. | 1404 |
| Industrial Equipment & Parts | 523 |
| Industrial Sales Solutions, LLC | 400 |
| Innovative Plant Solutions, Inc. | 1107 |
| Innovative Technologies | 1400 |
| IntegroEnergy Group, Inc. | 1300 |
| Interpoll Laboratories, Inc. | 1229 |
| Interra Global Corporation | 1003 |
| Interstates, Inc. | 1009 |
| J&D Construction, Inc. | 1101 |
| J.C. Ramsdell Enviro Services, Inc. | 528 |
| Jackson Industrial Construction | 327 |
| Jacobs Corporation | 305 |
| Jasper Engineering & Equipment Company | 530 |
| Johnson Screens | 2107 |
| KATZEN International, Inc. | 709 |
| K-Coe Isom | 1031 |
| Keit Spectrometers | 1235 |
| Kemin Biofuels | 606 |
| KFI Engineers | 312 |
| Kiewit Energy Group | 2108 |
| Kinergetics, LLC | 1401 |
| Knobelsdorff Electric | 1132 |
| Koch Engineered Solutions | 2018 |
| Komax Systems, Inc. | 1134 |
| Kubco Services, LLC | 1629 |
| Kurita America | 901 |
| L&M Ethanol Maintenance Contracting, Inc. | 2037 |
| Laidig Systems, Inc. | 506 |
| Lallemand Biofuels & Distilled Spirits | 815 |
| Lamons | 1627 |
| Lantha Sensors | 2008 |
| Lazar Scientific, Inc. | 1508 |
| Leaf by Lesaffre | 1315 |
| Llumin | 1501 |
| Lotus Mixers, Inc./LOTUS Process Group, LLC | 303 |
| Louisville Dryer Company | 2048 |
| Lundberg-a LDX Solutions Brand | 209 |
| LYS Enterprises | 2015 |
| Maas Companies, Inc. | 1206 |
| Malloy Electric | 431 |
| MAP General Mechanical Contractors | 403 |
| Mapcon Technologies, Inc. | 1227 |
| Marking Services Inc. | 2045 |
| Mason Manufacturing, LLC | 832 |
| Master Packing & Rubber Company (MPRC) | 1725, 1727 |
| MBA Energy & Industrial, LLC | 1626, 1628 |
| McC, Inc. | 1327 |
| Mcgyan Biodiesel, LLC | 1603 |
| Merjent, Inc. | 830 |
| Metrohm USA | 1335 |
| Midland Scientific, Inc. | 433 |
| Mid-States Millwright & Builders | 435 |
| Midwest Cooling Towers, Inc. | 526 |
| Midwest Ironworks | 1203 |
| Miller Mechanical Specialties, Inc. | 2027 |
| Minnesota Bio-Fuels Association, Inc. | 1331 |
| MoistTech Corp. | 604 |
| Mole Master Services Corporation | 600 |
| Montrose Environmental Group, Inc. | 409 |
| MRC Global | 404 |
| NABP | 321 |
| Nalco Water, an Ecolab Company | 1135 |
| National Corn-to-Ethanol Research Center | 1313 |
| Navigator CO2 Ventures, LLC | 215 |
| Nelson Baker Biotech | 1005 |
| Neptech, Inc. | 326 |
| Nestec, Inc. | 333 |
| Neuman & Esser USA, Inc. | 1712 |
| NightStick By Bayco Products, Inc. | 627 |
| NLB Corp. | 226, 224 |
| Nova Pangaea Technologies | 1703 |
| Novaspect, Inc. | 2026 |
| Novozymes | 1121 |
| O'Connor Kiln & Dryer | 426 |
| Oil-Dri Corporation of America | 1607 |
| Oxidizers, Inc. | 415 |
| P&E Solutions, LLC | 1432 |
| P1 Group, Inc. | 1721 |
| P-A Industrial Services | 1330 |
| Pace Analytical Services, LLC | 1027 |
| Paget Equipment Co. | 729 |
| Painters USA, Inc. | 300 |
| Pentair | 329 |
| Phase Biolabs, Inc. | 1708 |
| Phibro Ethanol | 615 |
| Pinnacle Engineering, Inc. | 301 |
| Pioneer Industrial Corporation | 1334 |
| Pivot Clean Energy Co. | 405 |
| PK Safety | 2011 |
| Plasma Blue | 223 |
| Pneumat Systems, Inc. | 2039 |
| PRAJ Industries Limited | 315 |
| Precision Pulley | 633 |
| Precision Survey & Consulting, Inc. | 2103 |
| Premier Industries | 512 |
| Premium Plant Services, Inc. | 1015 |
| Prentice | 1430 |
| Proflow Pumping Solutions | 2046 |
| ProQuip, Inc. | 826 |
| PROtect, LLC | 505 |
| Proteum Energy, LLC | 1513 |
| PSC Construction | 2104, 2105 |
| PSRG, Inc. | 1604 |
| Pyramid E&C LLC | 313 |
| Qi2 Elements | 1623 |
| Quality Liquid Feeds | 308 |
| Rain for Rent | 1106 |
| Rapid Fire Protection, Inc. | 1304 |
| Rasmussen Mechanical Services | 1402 |
| RCM Engineering - Thermal Kinetics | 621 |
| Refractory Service, Inc. | 1625 |
| Renewable Fuels Association | 701 |
| Renewal Service, Inc. (RSI) | 1423 |
| Richard | 1609 |
| Robinson Fans, Inc. | 1710 |
| RTP Environmental Associates, Inc. | 1328 |
| Rudolph Research Analytical | 1407 |
| SafeRack, LLC | 1635 |
| SAFFiRE Renewables | 1034 |
| Saola Energy, LLC | 809 |
| Schimberg Company | 726 |
| Scott Equipment Company | 1611 |
| SCS Engineers | 206 |
| SCS Global Services | 1408 |
| Separator Technology Solutions | 828 |
| SEPCO Sealing Equipment Products Co., Inc. | 1500 |
| Sepigel | 1502 |
| SGS North America Inc | 629 |
| Sherwin Williams | 430 |
| Shuttlewagon | 2047, 2049 |
| Siemens Industry, Inc. | 216 |
| Simoneau Sterling Midwest | 1200 |
| Solar Turbines Incorporated | 1433 |
| Solutions 4 Manufacturing | 1409 |
| SonicAire | 2009 |
| SOS Leak Repair | 1013 |
| Southern Heat Exchanger | 504 |
| ST Equipment & Technology | 929 |
| StoneAge Tools | 1731, 1733, 1735 |
| SUEZ Water Technologies | 521 |
| Sukup Manufacturing Co. | 1208 |
| Sulzer Pumps Solutions, Inc. | 2028, 2029, 2030, 2031 |
| Summit Carbon Solutions | 715, 814 |
| Sutton International | 1426 |
| Sys-Kool Cooling Towers | 208 |
| Teikoku USA, Inc. | 1505 |
| The CMM Group | 1333 |
| The Walling Company | 323 |
| TMI Coatings Inc. | 2101 |
| TorcSill Foundations, LLC | 429 |
| Trace Environmental Systems, Inc. | 2012 |
| Trackmobile Railcar Movers | 1521, 2050 |
| Tranter, Inc. | 1215 |
| Trident Automation, Inc. | 214 |
| Trihydro Corporation | 933 |
| Trislot USA | 310 |
| Trucent | 515 |
| Twin City Fan / Clarage | 229 |
| Unison Energy, LLC | 1534 |
| VAA, LLC | 401 |
| Vahterus Oy | 509 |
| Valley Equipment Company, Inc. | 1108 |
| Valor Manufacturing Training | 727 |
| Vanguard Fire & Security, Inc. | 1713 |
| Veolia Water Technologies | 1601 |
| ViewTech Borescopes | RF System Lab | 2014 |
| Viking Automatic Sprinkler Co. | 1028 |
| Vilter Mfg / Emerson | 2023 |
| Vogelbusch USA, Inc. | 1029 |
| W.R. Grace & Co. | 1615 |
| Warrior Mfg., LLC | 1326 |
| Water Tech, Inc. | 1035 |
| WCR Incorporated | 1303 |
| WEG Electric Corp. | 230 |
| Weishaupt America, Inc. Midwest | 427 |
| Westmor Industries, LLC | 1100 |
| Whitefox Technologies Limited | 915 |
| Williams Refractory Services, Inc. | 732 |
| WINBCO | 1204 |
| Winger Companies | 2010 |
| Wiss, Janney, Elstner Associates, Inc. | 1403 |
| World Kinect Energy Services | 434 |
| Woven Metal Products | 1103 |
| XOS | 1506 |
| Xylogenics, Inc. | 1621 |
| Xylome Corporation | 1302 |
| Zachry | 635 |
| Zenviro Tech US, Inc. | 1535 |
| Zeochem, LLC | 500 |