Bath tubs; Faucets; Hand-held showers; Kitchen sinks; Shower enclosures; Shower stands; Showerheads and components thereof; Showers; Toilet seats; Toilet stool units with a washing water squirter; Wash basins being parts of sanitary installations; Water conservation plumbing fixtures, namely, faucets; Water control valves for faucets; Water filters; Water treatment equipment, namely, water filtration units