Michał Maj

74.99.Z - All other professional, scientific and technical activities, not elsewhere classified

33.13.Z - Repair and maintenance of electronic and optical devices

33.20.Z - Installation of industrial machinery, equipment, and devices

46.19.Z - Activity of agents involved in wholesale trade of non-specialized goods

46.50.Z - Wholesale trade of information and communication technology devices

46.90.Z - Non-specialized wholesale trade

70.20.Z - Business and management consultancy activities

72.10.Z - Scientific research and development in natural and technical sciences

82.30.Z - Activities related to organizing fairs, exhibitions, and congresses

85.59.B - Courses and training for acquiring knowledge, skills, and professional qualifications in non-school forms

85.59.D - Other non-school forms of education, not classified elsewhere