Piotr Gruszkiewicz - projektowanie, nadzór, kosztorysy

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

41.10.Z - Realization of building projects related to erection of buildings

41.20.Z - Building works related to erection of residential and non-residential buildings

59.20.Z - Sound recording and music publishing activities

71.11.Z - Architectural activities

71.12.Z - Engineering activities and related technical consultancy

90.01.Z - Performing arts activities