41 educational services, namely, conducting classes, courses, conferences, seminars, training sessions and workshops in the fields of engine and turbocharger technology; further education, namely, providing continuing education courses in the fields of engine and turbocharger technology; organizing and arranging of seminars and conferences; educational services, namely, organizing and arranging of classes, courses, training sessions and workshops in the fields of engine and turbocharger technology; conducting classes, courses, conferences, seminars, training sessions and workshops in the fields of engine and turbocharger technology; publication of books, brochures, course materials and prospectuses; online publication of electronic books, brochures, course materials and prospectuses