35 Organization of exhibitions and trade fairs for commercial or advertising purposes in the field of education, training and knowledge
38 Telecommunications services, namely ISDN services; On-line messaging services, namely electronic store-and-forward messaging; electronic transmission of data information contained in databanks for visualization via computer terminals; electronic correspondence exchange services
41 Organization of exhibitions and trade fairs for cultural and educational purposes, arranging and conducting of congresses, colloquiums, seminars, symposiums, conferences, in the field of education, training and knowledge