PJM System Piotr Majewski

62.02.Z - Computer consultancy activities

62.01.Z - Computer programming activities

62.03.Z - Computer facilities management activities

62.09.Z - Other information technology and computer service activities

63.11.Z - Data processing, hosting and related activities

63.12.Z - Web portals

70.21.Z - Public relations and communication activities

70.22.Z - Business and other management consultancy activities

85.59.B - Other out-of-school forms of education, not elsewhere classified

85.60.Z - Educational support activities