Piotr Skrzypczak

61.20.Z - Wireless telecommunications activities, excluding satellite telecommunications activities

26.30.Z - Manufacture of(tele)communication equipment

33.14.Z - Repair and maintenance of electrical equipment

58.29.Z - Other software publishing

61.10.Z - Wired telecommunications activities

61.90.Z - Other telecommunications activities

62.01.Z - Computer programming activities

62.02.Z - Computer consultancy activities

62.03.Z - Computer facilities management activities

63.11.Z - Data processing, hosting and related activities

73.12.C - Intermediation in the sale of the place on advertising aims in electronic media (Internet)

77.40.Z - Leasing of intellectual property and similar products, except copyrighted works

82.11.Z - Office administrative service activities