72.19.Z - Other research and experimental development on natural sciences and engineering
25.11.Z - Manufacture of metal structures and parts of structures
28.1 - Manufacture of general-purpose machinery
33.12.Z - Repair and maintenance of machinery
33.20.Z - Installation of industrial machinery and equipment
71.12.Z - Engineering activities and related technical consultancy
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
82.30.Z - Organisation of conventions and trade shows
85.59.B - Courses and training related to acquiring knowledge, skills, and professional qualifications in non-school forms
