THY-210A diesel oil purifier series are developed by our tianhou group after Boston series, which is mainly applied to various vehicles and low power diesel engine powered equipment below 350HP. This new invention is used for filtering more than 90% harmful impurities for diesel engine; guarantee providing more cleaner diesel fuel for your diesel engine, attain the aim of protecting diesel engine and its "Three Filters" and saving oil. This product is different from the existed diesel filter in our market, which can not be installed directly on the diesel engine body. THY-210A diesel oil purifiers should be installed on the oil supply tube between the oil tank and diesel filter. In China, the product has been applied to multiple companies running oil field large equipment, truck, fishery harbors diesel engine, ect, and gained surprising achievements and praise from clients.