... including non-hydrocarbon, alkene, polycyclic aromatic hydrocarbon, metal hydronium, impurities, metal particles, asphaltene and colloid etc. and due ... re-refining industrial waste oil(including equipment lubricants, metal-working oil and process oil) and used automotive lubricants( ... base-oils to virgin base-oil quality.I.Working principle This equipment adopt physicochemical actions to polymerize, ...