KAZIMIERZ STĘPNIAK: BROWAR SŁUPSK; "MŁYN ZAMKOWY" Ryszard Mikołajczyk, Jerzy Olszewski i Kazimierz Stępniak Spółka cywilna w Potęgowie; "Wyspa Słupska" K.Stępniak, J.Olszewski, R.Mikołajczyk i M.Korganowski Spółka cywilna w Słupsku

35.12.E - Hydropower

01.61.Z - Service activities supporting crop production

10.61.Z - Manufacture of grain mill products

46.90.Z - Non-specialized wholesale trade

47.11.Z - Non-specialized retail trade with a predominance of food, beverages, or tobacco products

47.12.Z - Other non-specialized retail trade

47.81.Z - Retail sale of motor vehicles

49.41.Z - Road freight transport

52.10.B - Warehousing and storage of other goods

55.20.Z - Tourist accommodation and short-term accommodation facilities

55.30.Z - Campsites and camping grounds

56.11.Z - Restaurants and other permanent food service activities

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