Pro Sand Ernest Machnicki

08.12.Z - Extraction of gravel, sand, clay, and kaolin

23.20.Z - Production of refractory products

23.63.Z - Production of prefabricated concrete mixtures

23.64.Z - Production of mortar

33.12.Z - Repair and maintenance of machinery

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

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

43.12.Z - Site preparation for construction

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

43.35.Z - Performing other finishing construction works

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

43.50.Z - Specialized construction works in the field of civil and water engineering

43.91.Z - Masonry works

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

46.83.Z - Wholesale trade of wood, construction materials, and sanitary equipment

49.41.Z - Road freight transport

52.24.C - Cargo handling at other handling points

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