Shower toilets and structural parts therefor; toilet seats, including toilet seats with washing water squirter; toilet bowls, including toilet bowls equipped with washing water squirter; toilet seats for heating, washing and drying body parts; bidets and remote controls for use with bidets, sold together as a unit; water closets and remote controls for use with water closets, sold together as a unit; toilet tanks and structural parts therefor; toilet tank assemblies comprised of toilet tank bowls for flushing toilet tanks; toilets and remote controls for use with toilets, sold together as a unit; tanks, namely, cistern tanks for toilets; toilet tank balls; tap water faucets; fixed spouts used directly in bidets and toilets; plumbing fixtures, namely, shower sprayers for use with toilets and bidets; bidet nozzles; electric hand drying apparatus for washrooms, namely, electric hand dryers; electric water warmer; hot water heater using gas and structural parts therefor; hot water heater using oil and structural parts therefor; basins and wash-hand bowls being parts of sanitary installations; handles for flushing toilet water operated by remote control; control valves for toilet flushing water; sinks; bath fittings, namely, bath tubs with washing place; bath tubs with bubble generation apparatus; showers; bath tubs; bath units, namely, pre-fabricated bath rooms containing a faucet, bath tub, floor, walls, ceiling board and shower