Air conditioning apparatus and installations, namely, electric fans, air conditioners, humidifiers, dehumidifiers, air conditioning apparatus and installation parts, namely, air filters, fan coils, ventilation hoods, air dryers, fans; furnace boilers; germicidal lamps for purifying air; soldering lamps; gas lamps; solar energy powered stoves; sanitary apparatus, namely, toilet seats, bath tubs, showers, flushing tanks; solar collectors; waste water purification units; electric radiators for heating; gas burners; nuclear reactors; refrigerating apparatus, namely, refrigerators, electric ice boxes and freezers