1. Clean Key Bartłomiej Dzwonek, 2. The Engineers Bartłomiej Dzwonek

62.01.Z - Computer programming activities

41.10.Z - Realization of building projects related to erection of buildings

41.20.Z - Building works related to erection of residential and non-residential buildings

43.11.Z - Demolition

43.12.Z - Site preparation

43.21.Z - Electrical installation

43.22.Z - Plumbing, heat and air-conditioning installation

43.29.Z - Other construction installation

43.32.Z - Joinery installation

43.39.Z - Other building completion and finishing

43.99.Z - Other specialised construction activities not elsewhere classified

46.73.Z - Wholesale of wood, construction materials and sanitary equipment

46.74.Z - Wholesale of hardware and plumbing and heating equipment and supplies

47.26.Z - Retail sale of tobacco products in specialised stores

47.29.Z - Other retail sale of food in specialised stores

47.41.Z - Retail sale of computers, peripheral units and software in specialised stores

47.42.Z - Retail sale of telecommunications equipment in specialised stores

47.43.Z - Retail sale of audio and video equipment in specialised stores

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

61.90.Z - Other 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

63.11.Z - Data processing, hosting and related activities

63.12.Z - Web portals

63.99.Z - Other information service activities not elsewhere classified

71.12.Z - Engineering activities and related technical consultancy

74.10.Z - Specialised design activities

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

81.10.Z - Combined facilities support activities

81.21.Z - General cleaning of buildings

81.22.Z - Specialised building and industrial cleaning activities

81.29.Z - Other cleaning activities

81.30.Z - Landscape service activities

82.99.Z - Other business support service activities not elsewhere classified

96.09.Z - Other personal service activities not elsewhere classified