DIOPTRA SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

71.12.Z - Engineering activities and related technical consultancy

41.20.Z - Construction work related to the construction of residential and non-residential buildings

42.11.Z - Works related to the construction of roads and highways

42.13.Z - Works related to the construction of bridges and tunnels

42.91.Z - Works related to the construction of water engineering objects

42.99.Z - Works related to the construction of other civil engineering and water engineering objects, not classified elsewhere

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

71.11.Z - Architectural activities

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

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