Repair or maintenance of computers; Installation, repair and maintenance of computers and their peripherals; Installation, maintenance and repair of computer hardware; Information technology consultancy relating to installation, maintenance and repair of computer hardware; Interference suppression in electrical apparatus; Machinery installation, maintenance and repair; Office machines and equipment installation, maintenance and repair; Providing information relating to repairs; Rebuilding machines that have been worn or partially destroyed; Rental of battery chargers; Repair of power lines; Upgrading of computer hardware; Installation of hardware for computer systems; Information on the maintenance of measuring and test equipment; Maintenance and repair of communications systems; Installation and maintenance of electrical equipment

Educational services, namely, conducting classes, seminars, conferences, workshops in the fields of customer services for cryptocurrency miners and distribution of training materials in connection therewith; Educational examination services; Providing educational examination for certification in the field of cryptocurrency data mining; Teaching; Know-how transfer [training]; Providing training and educational examination for certification purposes; Arranging and conducting of conferences; Arranging and conducting of symposiums; Multimedia Library Services; Providing online electronic publications, not downloadable; Text publishing (excluding advertising and promotional texts); Video tape distribution; Providing online videos, not downloadable; Entertainment services; Providing sports facilities; Toy rental; Games equipment rental; Conducting guided tours; Art exhibition