sztucznymi
Sztucznymi is the instrumental plural form of the Polish adjective sztuczny, meaning artificial, man-made, or synthetic. It is used to describe nouns in the instrumental case plural, agreeing with the noun in gender, number and case. In practice, it often appears in phrases that denote materials, means, or qualities produced by artificial rather than natural processes.
Grammatical note: the base form of the adjective in nominative singular is sztuczny (masculine), sztuczna (feminine),
Usage context: sztucznymi commonly appears in technical, scientific, or descriptive writing to specify that something is
In summary, sztucznymi is a standard inflected form used to describe plural nouns in the instrumental case,