Piotr Janicki

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

32.20.Z - Manufacture of musical instruments

41.00.A - Construction work related to the construction of residential buildings

41.00.B - Construction work related to the construction of non-residential buildings

43.11.Z - Demolition and destruction of buildings

43.12.Z - Site preparation for construction

43.21.Z - Installation of electrical systems

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

43.23.Z - Installation of insulation

43.24.Z - Installation of other building systems

43.31.Z - Plastering

43.32.Z - Installation of building carpentry

43.33.Z - Flooring, wallpapering, and cladding of walls

43.34.Z - Painting and glazing

43.35.Z - Performing other finishing construction works

43.41.Z - Performing roof structures and coverings

43.42.Z - Performing other specialized construction works related to the construction of buildings

43.91.Z - Masonry works

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

81.22.B - Other cleaning of buildings and industrial premises, not elsewhere classified

85.52.Z - Non-school forms of artistic education

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

90.20.A - Activities related to the staging of artistic performances

90.20.C - Activities related to the staging of artistic performances

95.21.Z - Repair and maintenance of electronic equipment for general use

95.29.Z - Repair and maintenance of personal and household goods, not elsewhere classified