OCEHA Łukasz Och

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

33.12.Z - Repair and maintenance of machinery

33.13.Z - Repair and maintenance of electronic and optical devices

33.14.Z - Repair and maintenance of electrical devices

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

35.12.A - Wind power

35.12.B - Solar power

43.11.Z - Demolition and destruction of buildings

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

43.32.Z - Installation of building carpentry

43.34.Z - Painting and glazing

43.35.Z - Performing other finishing construction works

43.41.Z - Performing roof structures and coverings

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

43.60.Z - Intermediation in specialized construction services

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

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

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

47.91.Z - Intermediary retail sale, non-specialized

68.12.A - Development of residential building projects

68.12.B - Development of non-residential building projects

81.21.Z - General cleaning of buildings

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

95.22.Z - Repair and maintenance of household appliances and equipment for household and gardening use

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