PIOTR SIENKIEWICZ

71.12.Z - Engineering activities and related technical consultancy

66.19.Z - Other activities auxiliary to financial services, except insurance and pension funding

69.20.Z - Accounting, bookkeeping and auditing activities; tax consultancy

70.22.Z - Business and other management consultancy activities

71.20.B - Other technical testing and analysis

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

74.30.Z - Translation and interpretation activities

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

82.30.Z - Organisation of conventions and trade shows

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