EXTRASERV.PL - Michał Grzeszczak

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

43.21.Z - Installation of electrical systems

47.52.Z - Retail sale of small metal products, building materials, paints, and glass

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

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

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

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

63.11.Z - Services related to computing infrastructure, data processing, website management (hosting), and other information services

90.03.Z - Creative activities and activities related to the staging of artistic performances

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