reverse osmosis 1)50 GPD with pump and tankl 2)5 stages filtration with stand pressure and gauge reverse osmosis with CE ROHS certificationwater rate:50 GPDType: counter top easy to use4 stages:1)PP remove the dust and mud2)GAC/UDF remove the organics,chlorine3)CTO remove the chlorine,organics ,other smell again4)RO remove virus ,bacteria,heavy metal ,etc.5)T33 post carbon reverse osmosis