JAN KOŁOSOWSKI POLON-SYSTEMS

26.20.Z - Manufacture of computers and peripheral equipment

25.62.Z - Mechanical working of metal elements

26.12.Z - Manufacture of electronic printed circuits

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

46.51.Z - Wholesale of computers, peripheral equipment and software

46.52.Z - Wholesale of electronic and telecommunications equipment and parts thereof

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

95.11.Z - Repair and maintenance of computers and peripheral equipment

95.12.Z - Repair and maintenance of (tele)communication equipment