1.Kolbis Marcin Mróz 2.Kron Marcin Mróz

25.53.Z - Mechanical processing of metal parts

25.99.Z - Manufacture of other ready-made metal products not elsewhere classified

33.11.Z - Repair and maintenance of metal products

33.20.Z - Installation of industrial machinery, equipment, and devices

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

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

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

42.21.Z - Works related to the construction of transmission pipelines and distribution networks

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

43.11.Z - Demolition and destruction of buildings

43.12.Z - Site preparation for construction

43.13.Z - Performing excavations and geological-engineering drilling

43.21.Z - Installation of electrical systems

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

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

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

46.13.Z - Activity of agents involved in wholesale trade of wood and building materials

46.19.Z - Activity of agents involved in wholesale trade of non-specialized goods

47.52.Z - Retail sale of small metal products, building materials, paints, and glass

47.92.Z - Intermediary retail sale, specialized

49.41.Z - Road freight transport

55.90.Z - Other accommodation services

68.11.Z - Buying and selling real estate on own account

68.12.A - Development of residential building projects

68.12.B - Development of non-residential building projects

68.12.C - Development of building projects

68.20.Z - Rental and management of own or leased real estate

68.31.Z - Real estate brokerage

68.32.A - Real estate valuation activities

68.32.C - Other real estate activities on behalf of third parties

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

95.31.A - Mechanical repair and servicing of motor vehicles, excluding motorcycles

95.31.B - Bodywork and paint repair, and maintenance of motor vehicles, excluding motorcycles

95.31.C - Motor vehicle detailing services, excluding motorcycles