Apparatus for filtering drinking water; Air conditioning filters; Faucet filters; Water filtering units for air conditioners use; Filters for air conditioning; Air filtering units; Reverse osmosis membrane filters for water treatment; Water filtration and purification units and replacement cartridges and filters therefor; Household tap-water filters; HEPA filters for household use; Water treatment equipment, namely, cartridge filtration units; Swimming pool water cleaning and filtering units;...