| 4B Components, Ltd. | 1714, 1615 |
| ADF Engineering, Inc. | 831 |
| AGRA Industries, Inc. | 807 |
| Alfa Laval, Inc. | 739, 737 |
| Alliance Technical Group, LLC. | 638 |
| Allied Tank and Construction | 1236 |
| Allied Valve, Inc. | 425 |
| American Coalition for Ethanol | 800 |
| AmeriWater | 830 |
| Anderson Chemical Co. | 738 |
| Apache Stainless Equipment Corporation | 1528 |
| Apollo Water Services | 1502, 1500 |
| Applied Material Solutions, Inc. | 736, 637 |
| Applied Products Thermal Products Group | 934 |
| Barnhart Crane & Rigging | 1430 |
| Baron Filtration Co., Inc. | 1400 |
| BE&E | 1623 |
| BetaTec Hop Products, Inc. | 1423 |
| Beyond (a christianson company) | 1439 |
| BioFuels Automation | 1415 |
| Bioleap, Inc | 2041, 2042 |
| Bion Companies | 1132 |
| Brawn Mixer,Inc. | 1507 |
| Campbell-Sevey | 1637 |
| Carbis Solutions Group, LLC | 1209 |
| CEMTEK KBV-Enertec | 1402 |
| Chase Nedrow Industries | 1006 |
| ChemTreat, Inc. | 1035 |
| Christianson PLLP | 1438 |
| Clariant Corporation | 313, 412 |
| CompuWeigh Corporation | 1000 |
| Conveyor Engineering & Mfg. Co. | 2040 |
| CTE Global, Inc. | 1323 |
| Decker Electric, Inc. | 725 |
| Demo Plus, Inc. | 1605 |
| Direct Companies | 1008 |
| Dowco Valve Company | 1504 |
| Durr Systems, Inc. | 825 |
| DXP Enterprises | 1515 |
| Eagle Services Corporation | 1033, 1335 |
| EcoEngineers | 702, 700 |
| Ecolab, Inc. | 1239 |
| EGM, Inc. | 1736 |
| Emerson Appleton Lighting | 2033 |
| Emerson Measurement | 2034, 2035 |
| Entecco Filtration Technology, Inc. | 708 |
| Federal Screen Products, Inc. | 605 |
| Ferm Solutions, Inc. | 838 |
| Flottweg Separation Tech | 937 |
| Fluid Quip Technologies, LLC | 1215 |
| Foundation Analytical Laboratory, Inc. | 939 |
| G Tech USA | 1129 |
| GEA Group | 1538 |
| Gecko Robotics | 2019 |
| Gilbert Industries, Inc. | 610 |
| Global Refractory Installers & Suppliers | 1437 |
| Growth Energy | 1123 |
| H2O Innovation | 1010 |
| Hamilton Company | 1401 |
| Hengye, Inc. | 828 |
| Howden | 1733 |
| Hupp Electric Motors | 705 |
| Hydrite Chemical Co. | 710 |
| ICM, Inc. | 923 |
| IFF | 1023 |
| Innovative Technologies | 2045 |
| Interra Global Corporation | 1303 |
| Interstates, Inc. | 1410 |
| iRely, LLC | 1734 |
| J&D Construction, Inc. | 909 |
| J.C. Ramsdell Enviro Services, Inc. | 1131 |
| Jacobs Corporation | 415 |
| Jamar Contracting | 1429 |
| Jasper Engineering & Equipment Company | 1813 |
| KATZEN International, Inc. | 1011, 1110 |
| Kemin Bio Solutions | 804 |
| KFI Engineers | 634 |
| Kinetic Industry | 636 |
| Knobelsdorff Electric | 510 |
| Koch Engineered Solutions | 2017, 2018 |
| Komax Systems, Inc. | 1715 |
| L&M Ethanol Maintenance Contracting, Inc. | 2044 |
| Leaf by Lesaffre | 1417 |
| Lotus Mixers, Inc./LOTUS Process Group, LLC | 930 |
| Louisville Dryer Company | 1639 |
| LucasE3 Engineering | 1725, 1824 |
| Maas Companies, Inc. | 1002 |
| Mapcon Technologies, Inc. | 1130 |
| Mason Manufacturing, LLC | 928 |
| Master Packing & Rubber Company (MPRC) | 429 |
| McC, Inc. | 833 |
| Merjent, Inc. | 1230 |
| Metrohm USA | 611 |
| Midwest Cooling Towers, Inc. | 829 |
| Midwest Ironworks | 1704 |
| MoistTech Corp. | 1307 |
| Mole Master Services Corporation | 902, 900 |
| NABP | 815 |
| Nalco Water, an Ecolab Company | 1237 |
| National Corn-to-Ethanol Research Center | 1315 |
| Nelson Baker Biotech | 1305 |
| Novaspect, Inc. | 2032 |
| Novozymes | 1223 |
| P1 Service, LLC | 1709 |
| PAC LP | 2021 |
| Paget Equipment Co. | 1425 |
| Painters USA | 1406 |
| Phase Biolabs, Inc. | 735 |
| Phibro Ethanol | 715 |
| Piller TSC Blower Corporation | 411 |
| Pinion | 1137 |
| Plant Maintenance Services, LLC | 529 |
| Pneumat Systems, Inc. | 2105, 2014 |
| PRAJ Industries Limited | 1101 |
| Premium Plant Services, Inc. | 1117 |
| ProQuip, Inc. | 1031 |
| Qi2 Elements | 630 |
| Rasmussen Mechanical Services | 839 |
| RCM Engineering-Thermal Kinetics | 416 |
| Renewal Service, Inc. (RSI) | 1625 |
| Rentech Boiler Systems, Inc. | 1635 |
| Rudolph Research Analytical | 1309 |
| Ryan & Associates, Inc. | 932 |
| Salof Ltd., Inc. | 628 |
| Schimberg Company | 1331, 1329 |
| Scott Equipment Company | 1136 |
| SCS Engineers | 1037 |
| SCS Global Services | 1004 |
| Seaton Construction Group | 824 |
| SECSI | 632 |
| Sentrimax Centrifuges (USA), Inc. | 1738 |
| Separator Technology Solutions | 1337 |
| SEPCO Sealing Equipment Products Co., Inc. | 1610 |
| SGS North America, Inc. | 1707, 1107 |
| Shandong Longda Bio-products Co., Ltd. | 615 |
| Siemens Industry, Inc. | 1817 |
| Solar Turbines Incorporated | 1629 |
| StoneAge Tools | 1835, 1839, 1837 |
| Sukup Manufacturing Co. | 911 |
| Sulzer Chemtech USA, Inc. | 2025, 2026 |
| Sulzer Pumps Solutions, Inc. | 2022, 2023 |
| The CMM Group | 1339 |
| TMI Coatings Inc. | 538 |
| Trident Automation, Inc. | 1821 |
| Trihydro Corporation | 1405 |
| US Coating Applicators | 2031 |
| VAA, LLC | 528 |
| Verity Carbon Solutions | 901 |
| Viking Automatic Sprinkler Co. | 1428 |
| Vogelbusch USA, Inc. | 906 |
| W.R. Grace & Co. | 1717 |
| Western Ag Enterprises, Inc. | 908 |
| Westmor Industries, LLC | 809 |
| Whitefox Technologies Limited | 1017 |
| WINBCO | 1408 |
| Wiss, Janney, Elstner Associates, Inc. | 1228 |
| World Kinect Energy Services | 1134 |
| Woven Metal Products | 1232 |
| Zachry | 938 |
| Zeeco, Inc. | 1432 |
| Zenviro Tech US, Inc. | 1537 |
| Zeochem, LLC | 729 |