Air sterilisers; Electric refrigerators; Electric soymilk makers; Electric thermo pots; Filaments for electric lamps; Flashlights; Light bulbs, electric; Oil purifying installations; Reheating furnaces for industrial purposes; Water filters; Water sterilizers; Wine cellars, electric; Electrostatic water treatment apparatus; Lamp bulbs; Sanitizing apparatus for linens using ultraviolet light, ozone sterilization and low pressure techniques