ELFROST SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

71.12.Z - Engineering activities and related technical consultancy

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

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

46.90.Z - Non-specialized wholesale trade

62.02.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

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

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

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