| 3T Services | 1428 |
| Acuren Inspection, Inc. | 1410 |
| ADF Engineering, Inc. | 731 |
| AGI | 1004 |
| AGRA Industries, Inc. | 210 |
| Air Resource Specialists, Inc. | 829 |
| AirClean Energy | 1106 |
| AirPro Fan & Blower Company | 900 |
| A-Lert Construction Services | 1133 |
| Alfa Laval, Inc. | 326 |
| Alliance Source Testing | 1029 |
| Alliance Tank Service, LLC | 1303 |
| Alliance Technical Group | 234 |
| Allied Valve & Instrumentation | 1212 |
| AMEC | 907 |
| American Coalition for Ethanol | 103 |
| Anderson Chemical Co. | 2003 |
| Andy J. Egan Company, Inc. | 1101 |
| Angel Yeast Co., Ltd. | 1027 |
| ANKOM Technology | 1500 |
| Apache Industrial Services, Inc. | 1336 |
| Apache Stainless Equipment Corporation | 926 |
| Applied Material Solutions, Inc. | 812 |
| Appruv | 1528 |
| Arkema, Inc. | 1314 |
| ASI Industrial | 126 |
| Authorized Grain Service | 1109 |
| Babcock & Wilcox | 2004 |
| Badger Meter | 1007 |
| BASF Enzymes, LLC | 1220 |
| BBI International | 1532 |
| BE&E | 1430 |
| BetaTec Hop Products, Inc. | 520 |
| BioFuels Automation | 1012 |
| Biofuels International | 1502 |
| Bioleap, Inc | 314 |
| Bion Companies | 707, 709 |
| Bird B Gone | 700 |
| Bismarck State College | 1526 |
| Bloc Environmental Solutions | 235 |
| Boerger, LLC | 1531 |
| Brace Industrial Group/Brand Safway | 1129 |
| Bray International, Inc. | 333 |
| Brown Tank, LLC | 908 |
| BS&B Pressure Safety Management, LLC | 1600 |
| Buckman | 506 |
| Buhler, Inc. | 200 |
| Bulk Conveyors, Inc. | 104 |
| Buresh Building Systems | 1228 |
| Burns & McDonnell | 1305 |
| Bushel | 936 |
| Butterworth, Inc. | 1602 |
| CAI ENVEA Group | 1615 |
| Carl Zeiss Spectroscopy GmbH | 110 |
| Ceco Environmental | 114 |
| CEDA International Corporation | 1421 |
| Central States Group | 1337 |
| Chem Aqua, Inc. | 1005 |
| ChemTreat, Inc. | 533 |
| Chief AGRI | 1203 |
| Christianson PLLP | 1037 |
| Civil Design, Inc. | 1402 |
| Cleaver-Brooks | 603 |
| Clextral, Inc. | 535 |
| Cloud/Sellers | 1201 |
| CompuWeigh Corporation | 308 |
| Consolidated Water Solutions | 835 |
| Conveyor Engineering & Mfg. Co. | 1405 |
| Cooling Technology Institute (CTI) | 1135 |
| Cooling Tower Depot, Inc. | 1003 |
| CPM | 807 |
| CSE Bliss Manufacturing, LLC | 226 |
| CTE Global, Inc. | 514 |
| C-TEC AG | 1134 |
| D3MAX, LLC | 1415, 1514 |
| David H. Paul, Inc. | 1232 |
| Dedert Corporation | 904 |
| DEKRA | 236 |
| Direct Companies | 602 |
| Donaldson Torit | 934 |
| Dowco Valve Company | 1104 |
| DPC Industries, Inc. | 124 |
| DPT Mechanical | 2017 |
| Draeger Safety | 1327 |
| DSM Bio-based Products & Services | 1014 |
| DuPont Industrial Biosciences | 820 |
| Durag, Inc. | 1603 |
| Durr Systems, Inc. | 1034 |
| EA Tanks, Inc. | 1329 |
| Eagle Services Corporation | 928 |
| EcoEngineers | 1035 |
| Ecolab, Inc. | 1223 |
| Edeniq, Inc. | 814 |
| Elemental Air | 828 |
| Emerson Automation Solutions | 1512 |
| Energy Integration, Inc. | 131 |
| Energy Management Solutions, Inc. | 337 |
| Enviro-Dyne Industrial Services | 1237 |
| Enviro-Tec America | 2002 |
| Epoxy Flooring Systems, LLC | 1524 |
| EvapTech, Inc. | 1208 |
| Ever Cat Fuels LLC | 1535 |
| Fagen, Inc. | 1112 |
| Ferm Solutions, Inc. | 101 |
| Fiber Chem, Inc. | 1613 |
| Fisher Tank Company | 1102 |
| Flottweg Separation Tech | 836 |
| Fluid Engineering | 1307 |
| Fluid Process Equipment, Inc. | 336 |
| Fluid Quip Technologies, LLC | 414 |
| Force Equipment | 1601 |
| Foundation Analytical Laboratory, Inc. | 1302 |
| Franzenburg Centrifuge | 1429 |
| Fusion Boiler Works, Inc. | 702 |
| GEA Group | 901, 1000 |
| Genesis III | 230 |
| Gilbert Industries, Inc. | 1006 |
| Global Fabrication, Inc. | 1515 |
| Global Refractory Installers & Suppliers | 307 |
| Golder Associates | 202 |
| Growth Energy | 500 |
| Grundfos Pumps Corporation | 1523 |
| GSI Group | 1113 |
| H2O Innovation | 2010 |
| Hall's Culligan Water | 1503 |
| Heartland Energies | 1427 |
| Hengye, Inc. | 406 |
| HK Solutions Group | 914 |
| Hoffmann Inc. & Wolf Material Handling Systems | 1506 |
| Honeywell Process Solutions | 136 |
| Honeywell Thermal Solutions | 134 |
| HORIBA Instruments International, Scientific Division | 1423 |
| Howden | 1426 |
| HRST, Inc. | 335 |
| HTH Companies | 137 |
| Hudson Products Corp./Cofimco USA | 1009 |
| Hupp Electric Motors | 1136 |
| Hydrite Chemical Co. | 306 |
| Hydro-Thermal Corporation | 1032 |
| IBT Industrial Solutions | 2015 |
| ICM, Inc. | 732 |
| Icon Industrial Services | 1432 |
| IIVS Interstate Industrial Vac Service, Inc. | 130 |
| Industrial Equipment & Parts | 632 |
| Infors USA, Inc. | 1130 |
| Innospec Fuel Specialties | 804 |
| Innovative Plant Solutions, Inc. | 636 |
| Innovative Technologies | 228 |
| IntegroEnergy Group, Inc. | 127 |
| Interra Global Corporation | 214, 115 |
| Interstates, Inc. | 701 |
| Inventure Renewables | 1522 |
| Iowa Central Fuel Testing Laboratory | 1300 |
| Ivanhoe Industries, Inc. | 227 |
| J&D Construction, Inc. | 801 |
| J.A. King | 1412 |
| J.C. Ramsdell Enviro Services, Inc. | 1137 |
| Jacobs Global | 830 |
| Jasper Engineering & Equipment Company | 1204 |
| JBT/A&B Process Systems | 1234 |
| JCI Industries, Inc. | 1414 |
| Jiangsu Seagull Cooling Tower Co.,Ltd. | 1409 |
| JTI Services, LLC | 1425 |
| KATZEN International, Inc. | 1315 |
| Keit Industrial Analytics | 1333 |
| Kelvion, Inc. | 1501 |
| Kemin Bio Solutions | 733 |
| KESCO-CPM Bliss Industries, LLC | 1100 |
| Koch Engineered Solutions | 1313 |
| Komax Systems, Inc. | 628 |
| Komline | 1404 |
| Kurita America | 320, 507, 509, 511, 606, 608, 610 |
| L&M Ethanol Maintenance Contracting, Inc. | 237 |
| Laidig Systems, Inc. | 1401 |
| Lallemand Biofuels & Distilled Spirits | 620 |
| Larson Engineering, Inc. | 1033 |
| Leaf by Lesaffre | 920 |
| Lechler, Inc. | 1107 |
| Lotus Mixers, Inc./LOTUS Process Group, LLC | 805 |
| Louisville Dryer Company | 229 |
| Maas Companies, Inc. | 1111 |
| Malloy Electric | 431 |
| Mapcon Technologies, Inc. | 432 |
| Mason Manufacturing, LLC | 527 |
| Maxi-Lift Inc. | 112 |
| McC, Inc. | 705 |
| Merjent, Inc. | 802 |
| Metrohm USA | 106 |
| Mid States Electric | 930 |
| Midland Scientific, Inc. | 1103 |
| Midwest Bird Control | 2000 |
| Midwest Cooling Towers, Inc. | 634 |
| Midwest Laboratories, Inc. | 1001 |
| Miller Mechanical Specialties, Inc. | 2008, 2009 |
| Minnesota Bio-Fuels Association, Inc. | 1226 |
| Mist Chemical & Supply Co. | 208 |
| Mitsubishi Chemical Corporation, Inc | 233 |
| Mole Master Services Corporation | 312 |
| Montrose Environmental Group, Inc. | 129 |
| MVTL Laboratories | 902 |
| NABP | 100 |
| Nalco Water, an Ecolab Company | 1322 |
| National Corn-to-Ethanol Research Center | 912 |
| National Heat Exchange Cleaning Corporation | 132 |
| Nelson Baker Biotech | 1420 |
| Neogen Corporation | 806 |
| Nestec, Inc. | 1614 |
| NETZSCH Pumps North America, LLC | 1436 |
| Nexcelom Bioscience | 1331 |
| NightStick By Bayco Products, Inc. | 1301 |
| North American Services Group | 220, 121 |
| Northwest Electric | 1408 |
| Novonesis | 1020 |
| O'Connor Kiln & Dryer | 1227 |
| Ohio Lumex | 120 |
| Olsson | 1326 |
| On Sight Video Surveillance | 837 |
| Orbijet/Tank Cleaning Technologies, Inc. | 1236 |
| Oxidizers, Inc. | 1422 |
| Pace Analytical Services, LLC | 209 |
| Painters USA | 224 |
| Peinemann Equipment | 1520 |
| Peli Biochem Technology Shanghaii | 601 |
| Pentair | 832 |
| Perten Instruments, Inc. | 906 |
| Phibro Ethanol | 712, 714 |
| Pinion | 1115 |
| Pinnacle Engineering, Inc. | 436 |
| PK Safety | 809 |
| Plant Maintenance Services, LLC | 425 |
| Player Design, Inc. | 1335 |
| Power/mation | 833 |
| PRAJ Industries Limited | 1214 |
| Precision Rotary Equipment | 803 |
| Premium Plant Services, Inc. | 614 |
| Processbio | 128 |
| Proflow Pumping Solutions | 1312 |
| ProQuip, Inc. | 729 |
| PROtect, LLC | 531 |
| Quality Liquid Feeds | 207 |
| R&J Material Handling | 1537, 2030 |
| R. STAHL, Inc | 135 |
| Rain for Rent | 1128 |
| Rasmussen Mechanical Services | 2012, 2013 |
| Rayeman Elements, Inc. | 1621 |
| Refractory Service, Inc. | 827 |
| Renewable Fuels Association | 300 |
| Renewable Process Solutions, Inc. (RPS) | 118 |
| Renewal Service Industrial (RSI) | 427, 429 |
| Riesa Construction | 1513 |
| Roadway Worker Training (RWT) | 1504 |
| Rockwell Automation | 1210 |
| RTP Environmental Associates, Inc. | 932 |
| SafeRack, LLC | 422 |
| Saola Energy, LLC | 937 |
| Sartorius Corporation | 1311 |
| Schimberg Company | 332, 334 |
| Scott Equipment Company | 2014 |
| SECSI | 328 |
| Seneca Companies | 626 |
| Shuttlewagon | 1036, 2025 |
| Siemens Industry, Inc. | 726, 728 |
| SoftVRks | 1529 |
| Solenis, LLC | 720 |
| Somes-Nick & Company | 935 |
| SOS Leak Repair | 512 |
| SPX Cooling Technologies, Inc. | 2016 |
| StoneAge Tools | 534 |
| Strobel Companies | 1132 |
| Sukup Manufacturing Co. | 206 |
| Sulzer Pumps Solutions, Inc. | 2005, 2006, 2007 |
| Sunson Industry Group Co., Ltd. | 1309 |
| Sutton International | 1031 |
| Syngenta/Enogen | 400, 402 |
| Sys-Kool Cooling Towers | 1206 |
| Tactical Safety Solutions | 1230 |
| TCI Services, Inc. | 116 |
| Terydon, Inc. | 1407 |
| The New York Blower Company | 2001 |
| The Waldinger Corporation | 1434 |
| The Walling Company | 825 |
| The Weitz Company | 232 |
| Think Environmental | 933 |
| Thompson Dryers- closed | 125 |
| Topp's Mechanical, Inc.- Out of Business | 1126 |
| Total Valve | 1400 |
| TowerScan | 1406 |
| Trace Environmental Systems, Inc. | 831 |
| TranSystems | 1521 |
| Tranter, Inc. | 1120 |
| Trident Automation, Inc. | 133, 627, 629 |
| Trihydro Corporation | 434 |
| Trinity Consultants | 1202 |
| Triple Green Energy | 2026 |
| Trucent | 1320 |
| VAA, LLC | 800 |
| Valley Equipment Company, Inc. | 524 |
| Vaughan Co., Inc. | 111 |
| Veolia Water Technologies | 1200 |
| Veolia Water Technologies & Solutions | 420 |
| Vertical Software, Inc. | 122 |
| VetterTec, Inc. | 924 |
| Victory Energy Operations, LLC | 1108 |
| Viking Automatic Sprinkler Co. | 808 |
| Vogelbusch USA, Inc. | 530 |
| W.D. Patterson Co., Inc. | 1403 |
| W.R. Grace & Co. | 1105 |
| Warrior Mfg., LLC | 528 |
| WCR Incorporated | 703 |
| Westmor Industries, LLC | 107, 109 |
| Whitefox Technologies Limited | 600 |
| Williams Refractory Services, Inc. | 526 |
| WINBCO | 1127 |
| Winger Companies | 1131 |
| Wired Within - OUT OF BUSINESS | 537 |
| World Kinect Energy Services | 2011 |
| Xylome Corporation | 630 |
| YSI Life Sciences | 1508 |
| Zachry | 412 |
| Zenviro Tech US, Inc. | 1122 |
| Zeochem, LLC | 529 |