Water filtering apparatus; liquid filters, namely, water filters; filters for apparatus for filtering fluid, namely, water; water purifier filter for industrial purpose; water purifier filter cartridges for industrial purpose; membranes for filtering waste water; reverse osmosis water filtration units; reverse osmosis water purification units; water purification filters; structural parts of filter for water purifying apparatus; purifying wastewater apparatus for industrial purpose; industrial water purifying apparatus for industrial purposes; water purification apparatus, namely, industrial water processors; tap-water purifying apparatus; water purification apparatus, namely, negative ion occurrence a water-purifying device; water purifying apparatus; water purifying units for producing potable water; water purifying apparatus and machines; water purification filters with selective membrane; water purification units for household purposes