11 Reverse osmosis membrane filters for water treatment; Reverse osmosis units; Water purification apparatus; Water purification filters; Water purification installations; Water purification units; Water purifying apparatus; Water purifying apparatus for household purposes; Filters for water purifiers; Flow restrictors for reverse osmosis water purification units; Membranes for reverse osmosis units; Tap water purifying apparatus; Tap-water purifying apparatus; Water treatment equipment, namely, reverse osmosis filtration units; Water treatment equipment, namely, reverse osmosis units; Water treatment equipment, namely, water filtration units and reverse osmosis units