JK SYSTEM CZERNIAK SPÓŁKA JAWNA

46.90.Z - Non-specialized wholesale trade

33.11.Z - Repair and maintenance of metal products

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

43.21.Z - Installation of electrical systems

43.35.Z - Performing other finishing construction works

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

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

95.10.Z - Repair and maintenance of computers and telecommunications equipment

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

96.99.Z - Other individual services not classified elsewhere