... possesses big dirt-remaining quantity,the filter element cover,shell and central bar are all made up of polypropylene material ... 0μm,10μm,20μm,30μm.PERFORMANCE AND FEATUREExtensive applicabilityBig flux quantity,small resistance,big dirt- ... high punrified water;optical disk industry,semiconductor industry and periphery industriesFoodstuff and beverage industry:mineral water,alcohol,juice,syrup,plant ...