BARBARA ZIELIŃSKA-SUŁEK INSTATHERM PRO

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

42.21.Z - Works related to the construction of transmission pipelines and distribution networks

42.99.Z - Works related to the construction of other civil engineering and water engineering objects, not classified elsewhere

43.12.Z - Site preparation for construction

43.24.Z - Installation of other building systems

43.50.Z - Specialized construction works in the field of civil and water engineering

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