Polish Committee for Standardization (Polish: Polski Komitet Normalizacyjny) is a Polish governmental organization responsible for standardization.
It was established in 1924.
Polish Standard
Polish Standard (Polish: Polska Norma, PN, denoted by the symbol BS) - a nationwide standard, adopted by consensus and approved by the Polish Committee for Standardization, The Polish Standards are widely available but not free, and their distribution is controlled by the PKN.
References
Polish Committee for Standardization Wikipedia(Text) CC BY-SA