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Air filters for domestic use; Water filters; Water filtration and purification units and replacement cartridges and filters therefor; Water filtering units; Filters for water purifiers; Filters for drinking water; Water purification filters; Drinking water filters; Reverse osmosis membrane filters for water treatment; Water filtration and purification units and replacement cartridges and filters therefor for fridge, ice maker, cartridge filters, etc; Household tap-water filters; Apparatus for filtering drinking water; Water filtering units for aquariums; Membranes for water filtering apparatus; Water filtering apparatus for domestic use; Swimming pool water cleaning and filtering units; Water filtering units for domestic, commercial, industrial use; Water softening apparatus and installations; Water softening units; Water conditioning units; Air conditioning filters; Air filters for furnaces; Filters for air purifiers; Air filters for industrial installations; Air filters for HVAC units; Air filters for vehicle cabins; Air filters for industrial purposes; Hot water heaters