Piotr Michalczak

42.91.Z - Works related to the construction of water engineering objects

01.61.Z - Service activities supporting crop production

01.62.Z - Service activities supporting animal husbandry

01.63.Z - Post-harvest services and seed processing for plant propagation

33.12.Z - Repair and maintenance of machinery

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

43.12.Z - Site preparation for construction

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

46.61.Z - Wholesale trade of agricultural machinery and additional equipment

46.63.Z - Wholesale trade of machines used in mining, construction, and civil and water engineering

46.64.Z - Wholesale trade of other machines and devices

47.12.Z - Other non-specialized retail trade

63.92.Z - Other information-related services

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

77.31.Z - Rental and leasing of agricultural machinery and equipment

77.32.Z - Rental and leasing of construction machinery and equipment

82.30.Z - Activities related to organizing fairs, exhibitions, and congresses

96.40.Z - Intermediation in individual service activities

96.91.Z - Home services for individuals

96.99.Z - Other individual services not classified elsewhere