Piotr Michalak - GRAND SERVICE SYSTEMS

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

33.14.Z - Repair and maintenance of electrical devices

41.10.Z - Construction work related to the construction of residential and non-residential buildings

41.20.Z - Construction work related to the construction of residential and non-residential buildings

43.11.Z - Demolition and destruction of buildings

43.12.Z - Site preparation for construction

43.21.Z - Installation of electrical systems

43.22.Z - Installation of plumbing, heating, and air-conditioning systems

43.29.Z - Specialized construction works

43.31.Z - Plastering

43.32.Z - Installation of building carpentry

43.34.Z - Painting and glazing

43.39.Z - Specialized construction works

43.91.Z - Masonry works

43.99.Z - Other specialized construction works, not classified elsewhere

46.18.Z - Activity of agents involved in wholesale trade of other specified goods

46.19.Z - Activity of agents involved in wholesale trade of non-specialized goods

46.52.Z - Wholesale trade

47.91.Z - Intermediary retail sale, non-specialized

56.10.A - Food service activities

56.10.B - Food service activities

56.21.Z - Occasional preparation and delivery of food for external clients (occasional catering)

56.29.Z - Food service activities

56.30.Z - Beverage serving activities

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

64.99.Z - Other financial services, except insurance and pension funds, not elsewhere classified

68.10.Z - Real estate activities on own account and development of building projects

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

68.31.Z - Real estate brokerage

68.32.Z - Other real estate activities on behalf of third parties

70.21.Z - Head office activities and management consultancy

70.22.Z - Head office activities and management consultancy

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

73.11.Z - Advertising agency activities

73.20.Z - Market research and public opinion polling

74.10.Z - Specialized design activities

77.11.Z - Rental and leasing of passenger cars and light motor vehicles

77.12.Z - Rental and leasing of trucks

78.20.Z - Temporary employment agencies and other services related to employee leasing

78.30.Z - Employment activities

80.10.Z - Detective and security activities

80.20.Z - Detective and security activities

80.30.Z - Detective and security activities

81.10.Z - Auxiliary activities related to maintaining buildings

81.21.Z - General cleaning of buildings

81.22.Z - Other cleaning of buildings and industrial premises

81.29.Z - Services related to maintaining buildings and landscaping

81.30.Z - Landscaping services

82.11.Z - Office administrative support activities and other business support services

82.19.Z - Office administrative support activities and other business support services

82.91.Z - Activities of collection agencies and credit bureaus

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

85.10.Z - Preschool educational institutions

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