60100000 Developmental and professional teaching aids and materials and accessories and supplies
60101700 Teacher resource materials
60101725 Technology activity or resource books
80140000 Marketing and distribution
80141600 Sales and business promotion activities
80141500 Market research
80141507 Consumer based research or clinics or focus groups
81140000 Manufacturing technologies
81141900 Manufacturing technology research and development services
81141902 Application or technology research and development service