Water purifiers for household purposes; filters for drinking water; strainers for sinks; filters for bidets; showers; shower heads; filters for shower heads; water heaters for household purposes; air conditioners for household purposes; extractor hoods for kitchens; tap water faucets; faucet filters; filters for water purifying apparatus; water purification filters; water purifying apparatus for household purposes; electric water purification filters for household purposes; shower fittings; f...