DOR-TEL Doradztwo i Usługi Piotr Zychowicz

71.12.Z - Engineering activities and related technical consultancy

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

43.21.Z - Electrical installation

47.91.Z - Retail sale via mail order houses or via Internet

61.10.Z - Wired telecommunications activities

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

61.90.Z - Other telecommunications activities

71.20.B - Other technical testing and analysis

73.20.Z - Market research and public opinion polling

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

77.39.Z - Rental and leasing of other machinery, equipment and tangible goods not elsewhere classified

82.30.Z - Organisation of conventions and trade shows

85.59.B - Other out-of-school forms of education, not elsewhere classified