MK Serwis Marcin Kowalczyk

62.09.Z - Activities related to programming, IT consulting, and related activities

25.12.Z - Production of metal doors and windows

25.29.Z - Production of fabricated metal products, excluding machinery and equipment

25.50.Z - Metalworking and coating of metals, mechanical processing of metal parts

25.62.Z - Production of locks and hinges

25.91.Z - Production of metal containers

26.12.Z - Manufacture of electronic printed circuits

26.30.Z - Manufacture of (tele)communication equipment

26.52.Z - Manufacture of watches and clocks

26.60.Z - Manufacture of irradiation equipment, electromedical and electrotherapeutic equipment

27.11.Z - Manufacture of electric motors, generators, and transformers

27.12.Z - Manufacture of electrical distribution and control apparatus

27.20.Z - Manufacture of batteries and accumulators

27.33.Z - Manufacture of installation equipment

27.40.Z - Manufacture of lighting equipment

27.51.Z - Manufacture of electric household appliances

27.52.Z - Manufacture of non-electric household appliances

28.11.Z - Manufacture of engines and turbines, except aircraft, vehicle, and motorcycle engines

28.13.Z - Manufacture of other pumps and compressors

28.14.Z - Manufacture of other taps and valves

28.24.Z - Manufacture of hand tools

28.30.Z - Manufacture of agricultural and forestry machinery

28.49.Z - Manufacture of machines and equipment not elsewhere classified

28.93.Z - Manufacture of machinery used in food processing, tobacco processing, and beverage production

28.96.Z - Manufacture of machinery for rubber or plastic processing

28.99.Z - Manufacture of other special-purpose machinery not elsewhere classified

33.11.Z - Repair and maintenance of metal products

33.12.Z - Repair and maintenance of machinery

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

33.16.Z - Repair and maintenance of civilian aircraft and spacecraft

33.19.Z - Repair and maintenance of other equipment and installations

43.13.Z - Performing excavations and geological-engineering drilling

43.31.Z - Plastering

43.91.Z - Masonry works

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

47.11.Z - Non-specialized retail trade with a predominance of food, beverages, or tobacco products

47.19.Z - Retail trade

47.21.Z - Retail trade of fruits and vegetables

47.22.Z - Retail trade of meat and meat products

47.23.Z - Retail trade of fish, crustaceans, and mollusks

47.26.Z - Retail trade of tobacco products

47.43.Z - Retail trade

47.51.Z - Retail sale of textile products

47.61.Z - Retail sale of books

47.62.Z - Retail sale of newspapers, periodicals, and paper articles

47.63.Z - Retail sale of sports equipment

47.64.Z - Retail sale of games and toys

47.71.Z - Retail sale of clothing

47.79.Z - Retail sale of used products

61.20.Z - Activities related to the resale of telecommunications services and telecommunications mediation

62.03.Z - Activities related to programming, IT consulting, and related activities

63.11.Z - Services related to computing infrastructure, data processing, website management (hosting), and other information services

63.91.Z - Portal and search engine activities

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

72.19.Z - Scientific research and development activities

73.11.Z - Advertising agency activities

73.12.D - Advertising through mass media

73.20.Z - Market research and public opinion polling

74.10.Z - Specialized design activities

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

95.12.Z - Repair and maintenance of computers, personal and household goods, and motor vehicles, including motorcycles

45.19.Z

45.20.Z

45.32.Z

45.40.Z