Energetyka Marcin Michalski

33.14.Z - Repair and maintenance of electrical devices

42.22.Z - Works related to the construction of telecommunications and electrical lines

43.21.Z - Installation of electrical systems

43.22.Z - Installation of plumbing, heating, and air-conditioning systems

43.29.Z - Specialized construction works

43.91.Z - Masonry works

43.99.Z - Other specialized construction works, not classified elsewhere

71.20.B - Inspection and issuing opinions on the technical condition of chimneys and ventilation ducts

72.19.Z - Scientific research and development activities

74.10.Z - Specialized design activities

74.90.Z - Other professional, scientific and technical activities, not elsewhere classified

85.51.Z - Non-school forms of sports education and recreational and sports activities

85.52.Z - Non-school forms of artistic education

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

85.60.Z - Educational support activities

90.01.Z - Creative activities and activities related to the staging of artistic performances

90.02.Z - Creative activities and activities related to the staging of artistic performances

93.19.Z - Sports activities, not elsewhere classified