41 Educational services, namely, conducting of seminars and conferences and workshops relating to business management of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; educational services, namely, conducting of seminars and conferences and workshops relating to diagnoses and construction of systems relating to the occurrence of risks, such as failures and accidents of plants based on installation and management condition of valves and other piping elements in chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; instruction services, namely, conducting of seminars and conferences and workshops relating to diagnoses and construction of systems relating to the occurrence of risks, such as failures and accidents of plants based on installation and management condition of valves and other piping elements in chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; planning, conducting and organization of seminars relating to business management of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; planning, conducting and organization of seminars relating to diagnoses and construction of systems relating to the occurrence of risks, such as failures and accidents of plants based on installation and management condition of valves and other piping elements in chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; providing non-downloadable electronic publications, namely, books and brochures and informational instructions in the field of business management of chemical, nuclear, power generation, petroleum, heat supply, steam and other plants; services of reference libraries for literature and documentary records; rental of books; publication of books; production of videotape film in the field of education not for movies or television programs and not for advertising or publicity; rental of cameras; rental of prerecorded sound recordings