AirProtekt Limited
Industrial air pollution control systems—Catalyzed particulate filters—DeNOx & oxidation systems
BASF Catalysts LLC
Emission control catalysts—Diesel particulate filters—Zeolite and vanadium based SCR catalysts
Baumot AG
Diesel particulate filters—Engines and engine components
Catalytic Exhaust Products
Catalytic converters for off-road vehicles and stationary engines
Caterpillar Emissions Solutions
Machine repowers—Engine upgrade groups (EUG)—Aftertreatment on in-use machines and engines
Cleaire Advanced Emission Controls
Development and sale of retrofit emission control technologies
Donaldson Company
Diesel emission control systems—Diesel oxidation catalysts—Particulate filters—Crankcase filtration/ventilation—OE and retrofit mufflers
Ecocat Oy
Emission control catalysts—Metal substrate catalytic converters for automotive and stationary engines—Industrial VOC emission control
EMCON Technologies
Diesel Particulate Filters—Active particulate filter regeneration systems—Selective catalytic reduction (SCR) systems
Engine Control Systems
OE and aftermarket emissions control systems for diesel, propane, gasoline and natural gas engines
HJS Fahrzeugtechnik
Exhaust gas aftertreatment systems for diesel and petrol engines—Sintered Metal Filter (SMF®)
Johnson Matthey
Diesel and automotive catalysts—Catalytic Mufflers—DeNOx and SCR catalysts for stationary engines—Industrial VOC control catalysts
MANN+HUMMEL USA
Diesel particulate filters—Crankcase ventilation
MIRATECH Corporation
Catalytic converters for large stationary engines—SCR NOx reduction systems—Air/Fuel ratio controllers
Nett Technologies Inc.
Catalytic emission control for off-road vehicles, buses, trucks, and stationary engines
Proventia Emission Control
Emission control systems for off-road and stationary diesel and petrol engines
Rypos Inc.
Actively regenerated diesel particulate filter system
ServoTech Engineering
SCR and particulate filter systems—Control systems for SCR catalysts and particulate filters
STT Emtec AB
DNOx, an EGR-based diesel NOx reduction system for OEM and retrofit applications
Süd-Chemie Inc., Air Purification
Diesel oxidation catalysts—Diesel particulate filters—DeNOx and SCR catalysts—Industrial VOC control catalysts
Universal Emission Technologies, A Division of Universal Silencer
Diesel particulate filters, oxidation catalysts, 3-way catalysts, SCR catalysts for engines in power generation, marine and oil & gas markets
- Airmeex S.A.
- AirProtekt Ltd.
- AirTek Inc. (Catco)
- AFT Abgastechnik GmbH
- Amed Italia
- Ansa Marmitte
- Automotive Edge, The (Hermoff)
- Barton Engineering Inc.
- Blackthorn Environmental
- Car Sound Exhaust Systems, Inc.
- Catalytica Energy Systems
- CleanAir Systems
- Combustion Components Associates
- Converter Technology Inc.
- Cordonna Associates
- DCL International
- DEC Marine
- Deparia Engineering Srl (Italy)
- DIF Die Ideenfabrik GmbH
- Dinex A/S (Denmark)
- DPF Regeneration.com LLC
- EAS, Incorporated
- Ecovent GmbH
- Ecozone Technologies (Israel)
- Eastern Manufacturing Inc.
- EHC Teknik
- E’MAX Environmental
- Emico Technologies
- Emission Control Systems (India)
- Eminox Ltd.
- EN Group (Sweden)
- Engine Control Systems Europe AB (Unikat)
- Engine Emissions Control Corp.
- Environmental Solutions (Asia) Pte Ltd.
- Environmental Solutions Worldwide
- Ernst Apparatebau
- ETB
- Exhaust Control Industries Pty.
- Extengine Transport Systems
- GfA
- Greentop GmbH
- Guangzhou Green Technologies (China)
- Haldor Topsoe A/S
- Heimbach
- Heraeus
- Hitz (Hitachi Zosen)
- Huaxia Environmental Protection Co. (China)
- HUG Engineering
- HUSS Umwelttechnik
- ILJIN Electric (Korea)
- Inteco
- JMJ Zaklad Produkcji Katalizator?w (Poland)
- Kaparta, Inc.
- KleenAir Systems
- Lanyu Technologies (China)
- Litex
- Mageta AG
- Mechanical Equipment Inc.
- Met-Pro Corporation
- Micro Fresh Filters (Australia)
- Miratech Corporation
- Miretti S.R.L.
- NoTox Systems
- Noxtech, Inc.
- Oberland Mangold GmbH
- Out-of-the-Water Enterprises, LLC
- PCH
- Philippine Catalytic (Philcat) Converter Inc.
- Pirelli & C. Ambiente Eco Technology
- Precision Combustion, Inc.
- Purefi A/S
- Purem Abgassysteme GmbH
- Pyroban Ltd. (UK)
- RJM Corporation
- Space S.r.l. - Ters Eco System Division
- Svenska Emissionsteknik
- Swenox AB
- Thermatrix, Inc.
- Tehag BV
- Ward Diesel Filter Systems
- Western Colima