... (CCRT technology), it is by the Diesel Oxidation Catalyst (DOC) and Diesel Particulate Filter (DPF) for diesel exhaust treatment modern technology, it is ... to achieve the automatic regeneration.Product Features:To remove the diesel generator emitted particulate matter (black smoke), conversion of CO, HC ... 85-90% .3. THC removal efficiency of more than 90% Diesel engine black smoke filter