| 4B Components, Ltd. | 1035 |
| ADF Engineering, Inc. | 730 |
| AGRA Industries, Inc. | 1829, 711 |
| Air Resource Specialists, Inc. | 1033 |
| Airgas Specialty Products | 1209 |
| A-Lert Construction Services | 526 |
| Allied Valve, Inc. | 1128 |
| Amerapex Corporation | 314 |
| American Coalition for Ethanol | 1102 |
| Anderson Chemical Co. | 2027 |
| Angel Yeast Co., Ltd. | 1233 |
| Apache Stainless Equipment Corporation | 2017 |
| Applied Material Solutions, Inc. | 533 |
| Badger Meter | 1329 |
| Battelle | 700 |
| BetaTec Hop Products, Inc. | 721 |
| BioFuels Automation | 1223 |
| Biofuels International | 328, 429 |
| Biomass Engineering & Equipment | 324 |
| Bion Companies | 513 |
| Bliss Industries, LLC | 804 |
| Boerger, LLC | 400 |
| Brown Tank, LLC | 1132 |
| BRUKS SIWERTELL | 1615 |
| Buresh Building Systems | 604 |
| Burns & McDonnell | 1521 |
| Bushel | 1626, 430 |
| Butterworth, Inc. | 1631 |
| Campbell-Sevey | 1623 |
| Chase Nedrow Industries | 436 |
| ChemTreat, Inc. | 1622 |
| Christianson PLLP | 736 |
| Civil & Environmental Consultants, Inc. | 501 |
| CompuWeigh Corporation | 601 |
| Conveyor Engineering & Mfg Co. | 336 |
| Cooling Technology Institute | 1107 |
| Cooling Tower Depot, Inc. | 505 |
| CPM Roskamp Champion | 1401 |
| CSE Bliss Manufacturing, LLC | 1126 |
| CTE Global, Inc. | 1221 |
| C-TEC AG | 727 |
| Decker Electric, Inc. | 2045 |
| Demo Plus Inc | 1034 |
| Direct Companies | 1203 |
| Dowco Valve Company | 1101 |
| DraCool-USA | 935 |
| Draeger Safety | 1201 |
| DURR Systems, Inc. | 323 |
| Eagle Services Corporation | 1229 |
| Eco Specialized Services | 1231 |
| EcoEngineers | 2028 |
| Ecolab, Inc. | 1135 |
| EISENMANN | 834 |
| Electric Pump, Inc. | 433 |
| Emerson Impact Partners | 2024, 2025 |
| Energy Integration, Inc. | 1103 |
| Enerquip, LLC | 503 |
| Enertech Solutions, Inc. | 1104 |
| EvapTech, Inc. | 1331 |
| Fagen, Inc. | 1421 |
| Ferm Solutions, Inc. | 302 |
| Flottweg Separation Tech | 833 |
| Fluid Quip Technologies, LLC | 1115 |
| Foundation Analytical Laboratory, Inc. | 608, 610 |
| GEA North America | 1434 |
| General Repair Service | 2012 |
| Genesis III | 1208 |
| Gilbert Industries, Inc. | 510 |
| Global Refractory Installers & Suppliers | 826 |
| Good Land Industrial | 532 |
| Graver Technologies | 637 |
| Growth Energy | 1021 |
| GSI Group | 737 |
| H2O Innovation | 1529 |
| Hengye, Inc. | 1108 |
| Howden | 707 |
| Hupp Electric Motors | 437 |
| Hydrite Chemical Co. | 704 |
| Hydro-Klean, LLC | 1323 |
| Hydro-Thermal Corporation | 1308 |
| ICM, Inc. | 821 |
| IFF | 921 |
| Industrial Equipment & Parts | 623 |
| Industrial Sales Solutions, LLC | 301, 327 |
| Infors USA, Inc. | 1200 |
| Innospec Fuel Specialties | 1304 |
| Innovative Plant Solutions, Inc. | 2038 |
| Innovative Technologies | 1404 |
| Integrated Power Services | 1302 |
| Interpoll Laboratories, Inc. | 1206 |
| Interra Global Corporation | 2040, 1621 |
| Interstates, Inc. | 1009 |
| J&D Construction, Inc. | 605 |
| J.C. Ramsdell Enviro Services, Inc. | 530 |
| Jacobs Corporation | 1007 |
| Jasper Engineering & Equipment Company | 1333 |
| JBT/A&B Process Systems | 1635 |
| KATZEN International, Inc. | 909 |
| K-Coe Isom | 427 |
| Keit Spectrometers | 1130 |
| Kemin Biofuels | 1405 |
| Komax Systems, Inc. | 1334 |
| Kurita America | 901 |
| L&M Ethanol Maintenance Contracting, Inc. | 2029 |
| Laidig Systems, Inc. | 2014 |
| Lallemand Biofuels & Distilled Spirits | 815, 813 |
| Leaf-Lesaffre Advanced Fermentations | 1415 |
| Lotus Mixers, Inc./LOTUS Process Group, LLC | 1327 |
| Louisville Dryer Company | 1407 |
| Maas Companies, Inc. | 1330 |
| Mapcon Technologies, Inc. | 511 |
| Mason Manufacturing, LLC | 1032 |
| Matrix Service | 1501 |
| McC, Inc. | 1109 |
| Mcgyan Biodiesel, LLC | 1607 |
| Mechanical Systems Incorporated | 337 |
| Merjent, Inc. | 830 |
| Metrohm USA | 2030 |
| Midland Scientific, Inc. | 1428 |
| Midwest Cooling Towers, Inc. | 1326 |
| Midwest Ironworks | 2013 |
| Minnesota Bio-Fuels Association, Inc. | 1328 |
| Mitsubishi Chemical Corporation, Inc | 824 |
| MoistTech Corp. | 1523 |
| Mole Master Services Corporation | 602, 600 |
| Montrose Environmental Group, Inc. | 1134 |
| MVTL Laboratories | 1027 |
| Myande Group Co., Ltd. | 426 |
| NABP | 1515 |
| Nalco Water, an Ecolab Company | 1133 |
| National Corn-to-Ethanol Research Center | 1413 |
| Nelson Baker Biotech | 1005 |
| NightStick By Bayco Products, Inc. | 631 |
| NLB Corp. | 629 |
| Novaspect, Inc. | 2026 |
| Novozymes | 1121 |
| O'Connor Kiln & Dryer | 1227 |
| Oxidizers, Inc. | 1314, 1215 |
| P&E Solutions LLC | 2016 |
| P1 Group, Inc. | 1205 |
| Pace Analytical Services, LLC | 1426 |
| Paget Equipment Co. | 731, 733 |
| Painters USA, Inc. | 1306 |
| PerkinElmer, Inc. | 832 |
| Phibro Ethanol Performance Group | 615 |
| Pinnacle Engineering, Inc. | 732 |
| Plasma Blue | 1513 |
| PRAJ Industries Limited | 415 |
| Premium Plant Services, Inc. | 1321 |
| Prentice | 1508 |
| ProQuip, Inc. | 828 |
| PROtect, LLC | 933 |
| Qi2 Elements | 1625 |
| Quality Liquid Feeds | 1430 |
| Rain for Rent | 411 |
| Rasmussen Mechanical Services | 1527 |
| Refractory Service, Inc. | 1029 |
| Renewable Fuels Association | 801 |
| Renewal Service, Inc. (RSI) | 929, 1028 |
| RTP Environmental Associates, Inc. | 1204 |
| SafeRack, LLC | 535 |
| Schimberg Company | 728, 726 |
| Schroeder Environmental Cleaning | 1627 |
| Seneca Companies | 1030 |
| Separator Technology Solutions | 407 |
| SEPCO | 1235 |
| Shandong Longda Bio-products Co., Ltd. | 404 |
| Shuttlewagon | 2011, 2009 |
| Siemens Industry, Inc. | 1435 |
| Simoneau Sterling Midwest | 305 |
| Solar Turbines Incorporated | 523 |
| Solutions 4 Manufacturing | 534 |
| SOS Leak Repair | 413 |
| ST Equipment & Technology | 725 |
| Sukup Manufacturing Co. | 705 |
| Suntaq International Limited | 335 |
| Syngenta/Enogen | 701 |
| Sys-Kool Cooling Towers | 403 |
| The Walling Company | 1422 |
| The Weitz Company | 1628 |
| Thermal Kinetics, a division of RCM Technologies, Inc. | 621 |
| Total Meter services Inc | 1301 |
| Trace Environmental Systems, Inc. | 2015, 931 |
| Tranter, Inc. | 1315 |
| Trident Automation, Inc. | 1433, 1432 |
| Trihydro Corporation | 1332 |
| Trislot USA | 322 |
| VAA, LLC | 401 |
| Vahterus Oy | 633 |
| Valley Equipment Company, Inc. | 810 |
| Vertical Software, Inc. | 1100 |
| Viking Automatic Sprinkler Co. | 1409 |
| Vogelbusch USA, Inc. | 1105 |
| Water Tech, Inc. | 806 |
| WCR Incorporated | 500, 502 |
| Williams Refractory Services, Inc. | 1403 |
| WINBCO | 1106 |
| WS Industrial Services | 1305 |
| Xylome Corporation | 1609 |
| Zeochem, LLC | 627 |