Filtering materials of unprocessed plastics for use in filtering out particulates from the air or impurities and microbes from water; filtering preparations of chemical substances for use in filtering out particulates from the air or impurities and microbes from water; filtering materials of mineral substances for use in filtering out particulates from the air or impurities and microbes from water; filtering materials of vegetable substances for use in filtering out particulates from the air or impurities and microbes from water; ceramic materials in particulate form, for use as filtering media for use in filtering out particulates from the air or impurities and microbes from water

Filters being parts of machines or engines; dust exhausting installations for cleaning purposes; dust removing installations for cleaning purposes; filters for cleaning cooling air, for engines; vacuum cleaners

Air filtering installations; gas scrubbing apparatus; filters for air conditioning