... Two filtering units can realize continuous production, closed type filtering system made of stainless steel mesh, reliable, no pollution.4 ... oil properties, restoring oil performance effectively.5. Efficient electric heating system, heating uniformity, less power consumption.6. Reasonable layout, ... 220240GB/T 3536Pour point /°C≤ -10-26GB/T 3535Acid number (mg KOH/G)≤ 2.00.04GB/T 7304Impurities(%)≤ 0. ...