K - SYSTEM Krzysztof Szostak

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

18.12.Z - Other printing

18.13.Z - Service activities related to printing preparation

32.12.Z - Manufacture of jewelry and similar products

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

33.14.Z - Repair and maintenance of electrical devices

33.20.Z - Installation of industrial machinery, equipment, and devices

42.21.Z - Works related to the construction of transmission pipelines and distribution networks

42.22.Z - Works related to the construction of telecommunications and electrical lines

43.21.Z - Installation of electrical systems

46.51.Z - Wholesale trade

47.19.Z - Retail trade

47.41.Z - Retail trade

47.42.Z - Retail trade

47.43.Z - Retail trade

47.54.Z - Retail sale of electrical household appliances

47.59.Z - Retail trade

47.63.Z - Retail sale of sports equipment

47.91.Z - Intermediary retail sale, non-specialized

47.99.Z - Retail trade

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

61.90.Z - Activities in other telecommunications fields

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

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

68.20.Z - Rental and management of own or leased real estate

73.11.Z - Advertising agency activities

73.12.A - Advertising through mass media

73.12.B - Advertising through mass media

73.12.C - Advertising through mass media

73.12.D - Advertising through mass media

73.20.Z - Market research and public opinion polling

74.20.Z - Photographic activities

81.21.Z - General cleaning of buildings

81.30.Z - Landscaping services

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

95.11.Z - Repair and maintenance of computers, personal and household goods, and motor vehicles, including motorcycles

95.12.Z - Repair and maintenance of computers, personal and household goods, and motor vehicles, including motorcycles

95.21.Z - Repair and maintenance of electronic equipment for general use

95.22.Z - Repair and maintenance of household appliances and equipment for household and gardening use

95.29.Z - Repair and maintenance of personal and household goods, not elsewhere classified

96.04.Z - Individual service activities