Decoloring color of black oil No acid used during operation. More environmentally friendly. ItemUnitGER-1GER-3GER-5Treatment CapacityL/ ... ,oil decolor,oil dehydration,machine oil purifier,engine oil filtrating,lubrication oil filtration,oil renovation, oil restoration,waste oil renewal, oil treatment, waste oi disposal, waste oil management, oil reclaiming Waste Oil Decoloring ...