Marcin Mielczarczyk

62.01.Z - Computer programming activities

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

62.02.Z - Computer consultancy activities

62.03.Z - Computer facilities management activities

62.09.Z - Other information technology and computer service activities

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

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

95.21.Z - Repair and maintenance of consumer electronics

95.29.Z - Repair of other personal and household goods