czerniawski.pl Dariusz Czerniawski

62.20.A - IT consulting and IT equipment management activities

58.29.Z - Publishing of other software

62.10.B - Programming activities

62.20.B - IT consulting and IT equipment management activities

63.92.Z - Other information-related services

71.12.B - Engineering activities and related technical consultancy

71.20.C - Other technical testing and analysis

74.99.Z - All other professional, scientific and technical activities, not elsewhere classified

85.59.B - Courses and training for acquiring knowledge, skills, and professional qualifications in non-school forms

85.59.D - Other non-school forms of education, not classified elsewhere

85.69.Z - Educational support activities, not classified elsewhere