| 4B Components, Ltd. | 1137 |
| Advance Tank & Construction Co. | 730 |
| AGRA Industries, Inc. | 1325 |
| Air Resource Specialists, Inc. | 1034 |
| Airgas Specialty Products | 1211 |
| A-Lert Construction Services | 526 |
| Alliance Technical Group | 334 |
| Allied Powers, LLC | 707 |
| Amerapex Corporation | 314 |
| American Coalition for Ethanol | 1202 |
| Anderson Chemical Co. | 2027 |
| Angel Yeast Co., Ltd. | 1233 |
| Apache Industrial Services, Inc. | 402 |
| Apache Stainless Equipment Corporation | 2017 |
| Apex Industrial Solutions, Inc. | 335 |
| Apollo Water Services | 1102 |
| Applied Material Solutions, Inc. | 533 |
| Appruv | 1800, 1802 |
| Arktos Environmental | 2013 |
| Ascensus Specialties | 303 |
| ASI Industrial | 426 |
| Aspen Aerogels | 1613 |
| Badger Meter | 1331 |
| BASF Enzymes, LLC | 715 |
| Battelle | 700 |
| BDI-BioEnergy International GmbH | 1812 |
| BetaTec Hop Products, Inc. | 721 |
| BioFuels Automation | 1223 |
| Bion Companies | 513 |
| Biosan, LLC | 1806 |
| Bird Control Group | 610 |
| Bliss Industries, LLC | 804 |
| Boerger, LLC | 400 |
| Boss RailCar Movers | 1819, 1922 |
| Brown Tank, LLC | 1234 |
| BRUKS SIWERTELL | 1003 |
| Buckman | 1013 |
| Buresh Building Systems | 604 |
| Burns & McDonnell | 1319 |
| Bushel | 430 |
| Butterworth, Inc. | 1334 |
| Campbell-Sevey | 1328 |
| Carbon America | 1702 |
| Carter Day International | 1104 |
| Chase Nedrow Industries | 436 |
| ChemTreat, Inc. | 1235 |
| Chicago Valves & Contols | 1229 |
| Christianson PLLP | 736 |
| Civil & Environmental Consultants, Inc. | 501 |
| Clariant Corporation | 301 |
| Clear Air Enviro- Services | 432 |
| ClearFlame Engine Technologies | 635 |
| Columbia Industries, LLC | 331 |
| Composite Cooling Solutions, LP | 1809 |
| CompuWeigh Corporation | 601 |
| Consolidated Water Solutions | 333 |
| Conveyor Engineering & Mfg. Co. | 336 |
| Cooling Technology Institute (CTI) | 1107 |
| Cooling Tower Depot, Inc. | 1208 |
| CPM Roskamp Champion | 315 |
| CSE Bliss Manufacturing, LLC | 1126 |
| CTE Global, Inc. | 1221 |
| C-TEC AG | 727 |
| Cust-O-Fab | 1615 |
| CV Technology, Inc. | 1716 |
| Cytiva | 330 |
| D3MAX, LLC | 1813, 1815 |
| Decker Electric, Inc. | 2037 |
| Direct Companies | 1203 |
| Dowco Valve Company | 1101 |
| DraCool-USA | 937, 1036 |
| Draeger Safety | 1201 |
| DURR Systems, Inc. | 323 |
| DXP Enterprises | 304, 306 |
| Ebro Armaturen USA | 433 |
| EcoEngineers | 2028 |
| Ecolab, Inc. | 1037 |
| Electric Pump, Inc. | 434 |
| Elite Refractory Services, LLC | 1128 |
| Emerson | 2024, 2025 |
| Energy Integration, Inc. | 1103 |
| Enertech Solutions, Inc. | 1106 |
| ENVEA, Inc. | 409 |
| Enviro-Dyne Industrial Services | 1237 |
| ESC Spectrum | 405 |
| Ethanol Producer Magazine | 1900 |
| Eurofins Scientific, Inc. | 1818 |
| EvapTech, Inc. | 1333 |
| Evergreen Engineering, Inc. | 1701 |
| Fagen, Inc. | 421 |
| Ferm Solutions, Inc. | 302 |
| Fit Tight Covers | 327 |
| Flottweg Separation Tech | 833 |
| Fluid Quip Technologies, LLC | 1115 |
| Foss & Company | 1323 |
| Foundation Analytical Laboratory, Inc. | 837 |
| Franzenburg Centrifuge | 1231 |
| GEA North America | 1436 |
| General Repair Service | 2012 |
| Genesis III | 1210 |
| Gilbert Industries, Inc. | 510 |
| Global Refractory Installers & Suppliers | 826 |
| Good Land Industrial | 532 |
| GPM, Inc. | 1719 |
| Grace Consulting, Inc. | 1715 |
| Graver Technologies | 637 |
| Growth Energy | 1021 |
| GSI Group | 737 |
| H2O Innovation | 1200 |
| H2S ZERO | 1434 |
| Hallco Industries, Inc. | 1703 |
| Hanson Professional Services | 328 |
| Hayward Tyler, Inc. | 1804 |
| Heartland Repair & Coating | 1207 |
| Heidolph North America | 1304 |
| Hengye, Inc. | 1110 |
| HK Solutions Group | 1012 |
| Hoffmann Inc. - Wolf Material Handling Systems | 729 |
| Howden | 810 |
| HSI-Heater Specialists | 1028 |
| Hupp Electric Motors | 437 |
| Hurst Boiler & Welding Co., Inc. | 1712 |
| Hydrite Chemical Co. | 704 |
| Hydro-Thermal Corporation | 1310 |
| ICM, Inc. | 821 |
| IFF | 921 |
| Industrial Contractors, Inc. | 1700 |
| Industrial Equipment & Parts | 623 |
| Innospec Fuel Specialties | 711 |
| Innovative Plant Solutions, Inc. | 2038 |
| Innovative Technologies | 1308 |
| Integrated Power Services | 1302 |
| IntegroEnergy Group, Inc. | 1209 |
| Interpoll Laboratories, Inc. | 1206 |
| Interra Global Corporation | 1005 |
| Interstates, Inc. | 1011 |
| Iowa Central Fuel Testing Laboratory | 1714 |
| Iowa Economic Development Authority | 308 |
| J&D Construction, Inc. | 605 |
| J.C. Ramsdell Enviro Services, Inc. | 530 |
| Jacobs Corporation | 1009 |
| Jasper Engineering & Equipment Company | 1335 |
| KATZEN International, Inc. | 910 |
| K-Coe Isom | 427 |
| Keit Spectrometers | 1133 |
| Kemin Biofuels | 709 |
| Knobelsdorff Electric | 504 |
| Koch Engineered Solutions | 2018, 2019 |
| Kubco Services, LLC | 834 |
| Kurita America | 901 |
| L&M Ethanol Maintenance Contracting, Inc. | 2034 |
| Laidig Systems, Inc. | 2014 |
| Lallemand Biofuels & Distilled Spirits | 815, 813, 1401 |
| Leaf by Lesaffre | 1314, 1215 |
| Lotus Mixers, Inc./LOTUS Process Group, LLC | 1329 |
| Louisville Dryer Company | 933 |
| LYS Enterprises | 503 |
| Maas Companies, Inc. | 1330 |
| Malloy Electric | 506 |
| Mapcon Technologies, Inc. | 511 |
| Mason Manufacturing, LLC | 1032 |
| McC, Inc. | 1111 |
| Mcgyan Biodiesel, LLC | 1718 |
| Mechanical Systems Incorporated | 337 |
| Merjent, Inc. | 830 |
| Metrohm USA | 2035 |
| Midland Scientific, Inc. | 1430 |
| Mid-South Engineering Company | 1816 |
| Mid-States Millwright & Builders | 1706 |
| Midwest Cooling Tower Services | 1814 |
| Midwest Cooling Towers, Inc. | 1326 |
| Miller Mechanical Specialties, Inc. | 929 |
| Mitsubishi Chemical Corporation, Inc | 824 |
| MoistTech Corp. | 808 |
| Mole Master Services Corporation | 602, 600 |
| Montrose Environmental Group, Inc. | 1236 |
| Murphy Company, Inc. | 332 |
| MVTL Laboratories | 1027 |
| NABP | 321 |
| Nalco Water, an Ecolab Company | 1035 |
| National Corn-to-Ethanol Research Center | 1213, 1312 |
| Nelson Baker Biotech | 1007 |
| NightStick By Bayco Products, Inc. | 631 |
| NLB Corp. | 629 |
| Novaspect, Inc. | 2026 |
| Novozymes | 1121 |
| Orbijet/Tank Cleaning Technologies, Inc. | 832 |
| P&E Solutions, LLC | 2016 |
| P1 Group, Inc. | 1205 |
| Pace Analytical Services, LLC | 1428 |
| Paget Equipment Co. | 731, 733 |
| Painters USA, Inc. | 1306 |
| Paso Robles Tank, Inc. | 735 |
| Pentair Haffmans Biogas | 1605 |
| PerkinElmer, Inc. | 931 |
| Phibro Ethanol | 615 |
| Pinnacle Engineering, Inc. | 732 |
| Pioneer Industrial Corporation | 507, 505 |
| Pivot Clean Energy Co. | 608 |
| PK Safety | 1227 |
| Plasma Blue | 2011 |
| PRAJ Industries Limited | 415 |
| Precision Pulley & Idler | 1601 |
| Premium Plant Services, Inc. | 1015 |
| Proflow Pumping Solutions | 411 |
| ProQuip, Inc. | 828 |
| PROtect, LLC | 935 |
| Qi2 Elements | 312 |
| Quality Liquid Feeds | 1432 |
| Rapid Fire Protection, Inc. | 2036 |
| Rasmussen Mechanical Services | 1130 |
| Refractory Service, Inc. | 1029 |
| Renewable Fuels Association | 801 |
| Richard Industrial Group | 1619 |
| RTP Environmental Associates, Inc. | 1204 |
| S.T. Cotter Turbine Services, Inc. | 734 |
| SafeRack, LLC | 537 |
| Salco Products, Inc. | 1708 |
| Saola Energy, LLC | 811 |
| Scales, Sales & Service, LLC | 329 |
| Schimberg Company | 728, 726 |
| Schroeder Environmental Cleaning | 310 |
| Scott Equipment Company | 528 |
| SCS Global Services | 428 |
| Seneca Companies | 1030 |
| Separator Technology Solutions | 407 |
| SEPCO Sealing Equipment Products Co., Inc. | 404 |
| SGS North America Inc | 633 |
| Ship & Shore Environmental | 429 |
| Shuttlewagon | 1801, 1803 |
| Siemens Industry, Inc. | 320 |
| Simoneau Sterling Midwest | 305 |
| Solar Turbines Incorporated | 523 |
| Solutions 4 Manufacturing | 536 |
| SOS Leak Repair | 413 |
| Southern Heat Exchanger | 508 |
| Specshell ApS | 606 |
| SPX Cooling Technologies, Inc. | 300 |
| ST Equipment & Technology | 725 |
| StoneAge Tools | 2039 |
| SUEZ Water Technologies & Solutions | 521 |
| Sukup Manufacturing Co. | 705 |
| Sutton International | 1232 |
| Syngenta/Enogen | 701 |
| Sys-Kool Cooling Towers | 403 |
| Teikoku USA, Inc. | 326 |
| The Lubrizol Company | 324 |
| The Walling Company | 1337 |
| The Weitz Company | 412 |
| Thermal Kinetics, a division of RCM Technologies, Inc. | 621 |
| TorcSill Foundations, LLC | 435 |
| Total Meter Services, Inc. | 1301 |
| Trace Environmental Systems, Inc. | 2015 |
| Tranter, Inc. | 1315 |
| Trident Automation, Inc. | 316 |
| Trihydro Corporation | 1332 |
| Trislot USA | 322 |
| Trucent | 515 |
| Unison Energy, LLC | 1717 |
| USA DeBusk | 1709 |
| Uzelac Industries, Inc. | 1305 |
| VAA, LLC | 401 |
| Vanguard Fire & Security, Inc. | 534 |
| Vaughan Co., Inc. | 1707 |
| Veolia Water Technologies | 1336 |
| Viking Automatic Sprinkler Co. | 1031 |
| Vogelbusch USA, Inc. | 1105 |
| W.R. Grace & Co. | 1617 |
| Warrior Mfg., LLC | 431 |
| Water Tech, Inc. | 806 |
| WCR Incorporated | 500, 502 |
| Weishaupt America, Inc. Midwest | 313 |
| Westmor Industries, LLC | 603 |
| Whitefox Technologies Limited | 915 |
| Williams Refractory Services, Inc. | 1603 |
| WINBCO | 1108 |
| WS Industrial Services | 1307 |
| Xylogenics, Inc. | 1303 |
| Xylome Corporation | 702 |
| Zachry | 1300 |
| Zenviro Tech US, Inc. | 836 |
| Zeochem, LLC | 627 |