... pigment,aflatoxin,phosphatide,saponin,colloid,cotton acid from oil to make it high-grade edible oil.Decolorization and refinement of edible animal and ... ,kerosene,gasoline,grease,paraffin wax,white oil,lubricating oil,Vaseline,etc.).Recycling and regeneration of industrial waste oil(mineral oil like machine oil and lubricating oil).Decolorization and ...