85.59.B - Courses and training related to acquiring knowledge, skills, and professional qualifications in non-school forms
56.21.Z - Event catering activities
73.20.Z - Market research and public opinion polling
73.30.A - Lobbying activity
73.30.B - Other activities in the field of public relations and communication
74.99.Z - All other professional, scientific and technical activities n.e.c.
82.30.Z - Organisation of conventions and trade shows
85.59.D - Other non-school forms of education, not elsewhere classified
85.69.Z - Educational support activities n.e.c.
94.99.Z - Activities of other membership organisations n.e.c.
