72.19.Z - Other research and experimental development on natural sciences and engineering
61.10.Z - Wired telecommunications activities
61.20.Z - Telecommunication reselling activities and intermediation service activities for telecommunication
61.90.Z - Other telecommunications activities
62.01.Z - Computer programming activities
62.02.Z - Computer consultancy activities
62.09.Z - Other information technology and computer service activities
71.20.B - Inspection and issuance of opinions on the technical condition of chimneys and ventilation ducts
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
85.59.B - Courses and training related to acquiring knowledge, skills, and professional qualifications in non-school forms
