SYSTEM KRZYSZTOF JERSAK

80.20.Z - Security systems service activities

25.62.Z - Mechanical working of metal elements

25.72.Z - Manufacture of locks and hinges

43.21.Z - Electrical installation

46.74.Z - Wholesale of hardware and plumbing and heating equipment and supplies

46.90.Z - Non-specialised wholesale trade

47.52.Z - Retail sale of hardware, paints and glass in specialised stores

47.59.Z - Retail sale of furniture, lighting equipment and other household articles in specialised stores

47.91.Z - Retail sale via mail order houses or via Internet

47.99.Z - Other retail sale not in stores, stalls or markets

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

96.09.Z - Other personal service activities not elsewhere classified