Clean Diesel Technologies, Inc. manufactures and distributes light duty vehicle catalysts and heavy duty diesel emissions control systems and products to automakers, integrators, and retrofitters in the United States, Canada, Sweden, and the United Kingdom. The company operates in two divisions, Heavy Duty Diesel Systems and Catalyst. The Heavy Duty Diesel Systems division designs and manufactures verified exhaust emissions control solutions. This division s products include diesel oxidation catalysts, diesel particulate filters, closed crankcase ventilation systems, and alternative fuel products. It also manufactures various exhaust accessories and specialty parts, including connectors, elbows, mounting brackets, clamps, exhaust stacks and guards, and intake air components; and manufactures and distributes diesel and natural gas exhaust and intake parts, as well as fenders, catalytic converter components, numerous brackets, guards, and clamps for mounting and sealing components. In addition, this division produces exhaust and intake components for racing enthusiasts; and manufactures intake and exhaust components for off-road and mining equipment, as well as for diesel and natural gas generators. This division markets its regenerating diesel particulate filters under the Purifilter, Combifilter, Purifier, Actifilter, and Cattrap brand names. The Catalyst division develops and produces catalysts to reduce emissions from gasoline, diesel, and natural gas combustion engines. This division s products include catalysts for gasoline and diesel engines, as well as for energy applications. Clean Diesel Technologies, Inc. sells its products through a network of dealers and distributors, as well as directly to original equipment manufacturers. The company was founded in 1996 and is headquartered in Oxnard, California.