Filters for fluids, namely, for water and area-water solutions; Water purification units; Water purification, sedimentation and filtration apparatus for clarification, thickening and filtration of water, waste water and industrial water; Water purifying units, for potable water for {indicate domestic, commercial or industrial use}; Water softening apparatus and installations; Water treatment equipment, namely, cartridge filtration units; Water treatment equipment, namely, reverse osmosis units; Water treatment equipment, namely, ultraviolet sterilization units; Water treatment equipment, namely, water filtration units; Water treatment equipment, namely, water filtration units and reverse osmosis units