Home used water filter: 5 stages purification: 1) 1st stage: PP or ceramic cartridge 2) 2nd stage: resin cartridge 3) 3rd stage: block carbon cartridge 4) 4th stage: carbon cartridge 5) 5th stage: post carbon cartridge Features: The undersink filter system applies to family, under the counter unit.It is very easy to install. Excluding water filter elements such as water filter cartridge,water filter housing,household reverse osmosis system,membrane&housing.FRP and all the related spare parts. All the products meet international specificstions, The products apply to the fields of water treatment,beverage-making,electoplating,organic solvent recovery,precious metsals recovery,etc. Two filtration Technical specification:water inlet fittings including 1/2"x1/2"x1/4" water inlet tee and 1/4" ball valve, water outlet fittings including different types of goose type faucets.When undersink system use underwater or unidentified water quality, please contact us. Inlet pressure:10-125psi/1.0-8.6kg/cm2 Max waterflow:1.0GPM Max temperature:45°1) Size: 42 x 16 x 40cm 2) Good quality Conveyance: Qty/20' FCL: 1,114pcs Qty/40' FCL: 2,400pcs Qty/40' HQ: 2,580pcs