... gas,impurities,colloid,bitumen,carbon,acid,etc. ZLY-I engine oil purifier seriesTechnical Features :1.The purifier uses a physiochemical reaction ... new structure ,goods layout and is deemed as a "mini refinery ".4.Very straightforward and evident effect ,can also serve for ... low standard waste oil of gas engine .2.Also applicable to recovery of other kind of waste oil . ZLY-I engine oil purifier system