41 Organization and holding of congresses, conferences, symposia, seminars, meetings, professional courses, teaching and lecturing events, and workshops in the field of hydrogen technology; publication of newspapers, magazines, catalogs, brochures and leaflets; online provision of electronic information on contents of congresses, conferences, symposia, seminars, meetings, professional courses, teaching and lecturing events, workshops; providing online non-downloadable electronic brochures in the field of hydrogen technology; providing online non-downloadable electronic magazines in the field of hydrogen technology; providing online non-downloadable newspapers; providing online non-downloadable electronic books in the field of hydrogen technology.