Toilet bowls and seats sold as a unit; prefabricated bath installations sold as a unit; shower enclosures; floor panels for prefabricated bath installations sold as a unit; shower pans for prefabricated bath installations sold as a unit; parts and fittings for prefabricated bath installations sold as a unit; wall panels for prefabricated bath installations sold as a unit; counter for prefabricated bath installations sold as a unit; electric air purifiers; electric water heaters; tap water faucets; automatic faucets; water mixing valves; tap water faucets with hoses; tap water faucets with function of water purification; hydrants; level controlling valves for tanks; pipe line cocks; faucets installed on shelves of vanity top sinks; hoses for tap water faucets; valves with sensor for automatic flush system for toilet bowls; valves with sensor for automatic flush system for urinals being sanitary fixtures; lighting apparatus, namely, electric lamps; range hoods; electric water heaters for household purposes; dish washing and drying machines for household purposes; electromagnetic induction cookers for household purposes; battery-powered portable bidets; gas water heaters; oil water heaters; toilet stool units with a washing water squirter; toilet seats; toilet bowls; seating for use with Japanese style toilet bowls; urinals being sanitary fixtures; disinfectant dispensers for toilets; liquid soap dispensers as a part of sanitary installations; backrests for toilet stool; armrests for toilet stool; armrests with backrests for toilet stool; service sinks; excrement sinks being part of sanitary installations; portable bidets; bidets; remote controls for water heaters; remote controls for bath boilers; remote controls for bathroom heaters; remote controls for electric air conditioners; air conditioners; air-conditioning apparatus for household purposes; electric cookers; extractor hoods for kitchens; hand dryers; hand drying apparatus for washrooms; washers for water taps; non-electric cooking heaters for household purposes; kitchen worktops with integrated sinks for household purposes; kitchen sinks for household purposes; doors for kitchen countertops; doors for kitchen sinks; household tap-water filters; wash-hand bowls being parts of sanitary installations; wash-hand basins being parts of sanitary installations; wash-hand bowls for wash-hand basins; bathtub units integral with a bathroom floor; Bathtubs with aerating nozzles; shower heads; shower hoses; showers and their parts; showers for wash-hand basins; bathtub units integral with a bathroom floor and a sink; bath boilers; bath fittings; noise generator for masking bodily noises being parts of sanitary installations; portable noise generator for masking bodily noises being parts of sanitary installations