MICHAŁ RETKOWSKI

62.01.Z - Activities related to programming, IT consulting, and related activities

27.90.Z - Manufacture of other electrical equipment

28.29.Z - Manufacture of other general-purpose machinery not elsewhere classified

28.99.Z - Manufacture of other special-purpose machinery not elsewhere classified

33.12.Z - Repair and maintenance of machinery

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

33.14.Z - Repair and maintenance of electrical devices

47.91.Z - Intermediary retail sale, non-specialized

47.99.Z - Retail trade

61.10.Z - Activities in the field of wired, wireless, and satellite telecommunications

61.20.Z - Activities related to the resale of telecommunications services and telecommunications mediation

61.30.Z - Telecommunications

61.90.Z - Activities in other telecommunications fields

62.02.Z - Activities related to programming, IT consulting, and related activities

62.03.Z - Activities related to programming, IT consulting, and related activities

62.09.Z - Activities related to programming, IT consulting, and related activities

71.12.Z - Engineering activities and related technical consultancy

71.20.B - Inspection and issuing opinions on the technical condition of chimneys and ventilation ducts

72.19.Z - Scientific research and development activities

74.10.Z - Specialized design activities

74.90.Z - Other professional, scientific and technical activities, not elsewhere classified