electric lightbulbs, electric lighting fixtures, heat pumps, portable electric heaters, heat exchangers, furnaces, steam generators, microwave ovens for cooking, cooking ovens, gas and electric ranges, refrigerators, clothes dryers, hand held electric hair dryers, air conditioners, electric air deodorizers, air filters, air purifying units, hot water heater, water purification units and water softening units for commercial, industrial and domestic use

papers, films and plates for use in photosensitive compositions