Product Name household UV lamp water filter 1st: PP-10-1 PP fiber filtration wipes off impurities, algae, silt, sediment 2nd:UDF-10-1 GAC filtration wipes off residual chlorine 3rd:CTO-10-4 Block carbon remove the heterochrosis,odour,chroline and other materials which are harmful to health.To improve the taste, Will use the micropore of the active carbon filter to holdback the microgranule,micro colloid and micro suspended materials. To make the water which into the RO membrane is suitable so as make the lifespan of the ro membrane are longer 4th:UV lamp UV sterilization system available to kill the germs completely in the water Housing double oring or single oring housing OEM Custom logo print, customized package