| 1 | Johnson Matthey Stationary Emissions Control LLC | | USA |
| 2 | CECO Environmental | | USA |
| 3 | Analytical Systems Keco | | USA |
| 4 | Envitech | | USA |
| 5 | Faurecia | | USA |
| 6 | Dynaflex Products | | USA |
| 7 | Shore Pipeline Solutions LLC | | USA |
| 8 | Dry Systems Technologies | | USA |
| 9 | Conifer Systems | | USA |
| 10 | Alliance Corp. | | USA |
| 11 | Akron Polymer Products | | USA |
| 12 | Air Dynamics Industrial Systems Corp. | | USA |
| 13 | DCL International Inc. | | USA |
| 14 | Sakor Technologies Inc. | | USA |
| 15 | Nol-Tec Systems Inc. | | USA |
| 16 | Synergy Catalyst | | USA |
| 17 | LumaSense Technologies Inc. | | USA |
| 18 | MIRATECH Corporation | | USA |
| 19 | Cheng Power Systems Inc | | USA |
| 20 | Enviro Petroleum Corp. | | USA |
| 21 | AirFlow Catalyst Systems Inc. | | USA |
| 22 | HNO Green Fuels Inc. | | USA |
| 23 | Maxim Silencers Inc. | | USA |
| 24 | Mid-State Instruments | | USA |
| 25 | Neutronics Enterprises Inc. | | USA |
| 26 | DENSO Manufacturing | | USA |
| 27 | BiOWiSH Technologies Inc. | | USA |
| 28 | Advanced Plasmonics Inc. | | USA |
| 29 | SaviCorp | | USA |
| 30 | Eno-Chem LLC | | USA |
| 31 | Rhodia Electronics & Catalysis | | USA |
| 32 | Enaid Energy Llc | | USA |
| 33 | Terra Industries Inc. | | USA |
| 34 | Pollution Systems Inc. | | USA |
| 35 | Air Clear LLC | | USA |
| 36 | Classifier Milling Systems | | USA |
| 37 | COSA Xentaur Corp. | | USA |
| 38 | CR Clean Air Group | | USA |
| 39 | Nanovapor Systems Asia Ltd | | USA |
| 40 | PRD Tech Inc. | | USA |
| 41 | 300 Technologies Inc. | | USA |
| 42 | Forbes Marshall Inc. | | USA |
| 43 | APC Technologies Inc. | | USA |
| 44 | Air Products Inc. | | USA |
| 45 | Strategic Environmental & Energy Resources Inc. | | USA |
| 46 | Honeywell Thermal Solutions | | USA |
| 47 | Nestec Inc. | | USA |
| 48 | Panametrics (a Baker Hughes business) | | USA |
| 49 | Epcon Industrial Systems Inc. | | USA |
| 50 | MonitorTech Inc. | | USA |
| 51 | CDTi Advanced Materials Inc. | | USA |
| 52 | The CMM Group | | USA |
| 53 | CR Ocean Engineering | | USA |
| 54 | Uniqair Technologies Ltd. | | USA |
| 55 | Aerinox Inc. | | USA |
| 56 | Ultra Check Inc | | USA |
| 57 | BorgWarner Inc. | | USA |
| 58 | Harco Mfg. Co. | | USA |
