Air cleaning units; Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air filters for domestic use; Air filters for heating and cooling registers; Aquarium filtration apparatus; Electric air deodorizing apparatus; Electric air driers; Electric fans for personal use; Filters and filtering devices for air and gas conditioning; Filters for drinking water; Heat sinks for use in heating, cooling and ventilating apparatus; Tap-water purifying apparatus; Ve...