Piotr Wilniewczyc Solid Eco

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

37.00.Z - Sewage disposal and treatment

47.91.Z - Retail sale via mail order houses or via Internet

58.11.Z - Book publishing

58.14.Z - Publishing of journals and periodicals

58.19.Z - Other publishing activities

59.11.Z - Motion picture, video and television programme production activities

59.20.Z - Sound recording and music publishing activities

63.91.Z - News agency activities

71.12.Z - Engineering activities and related technical consultancy

71.20.A - Food quality testing and analysis

71.20.B - Other technical testing and analysis

72.11.Z - Research and experimental development on biotechnology

72.19.Z - Other research and experimental development on natural sciences and engineering

74.20.Z - Photographic activities

79.11.A - Tour agents activities

79.11.B - Tour middlemen activities

79.12.Z - Tour operator activities

79.90.A - Couriers on package tours and tour guides activities

82.30.Z - Organisation of conventions and trade shows

85.59.B - Other out-of-school forms of education, not elsewhere classified

85.60.Z - Educational support activities

91.04.Z - Botanical and zoological gardens and nature reserves activities