Christian Douglas-Kozlowska "The Articles in Polish-English Translation"
na temat forest
a/ forests in English-speaking countries
omit the article if the name includes a proper name
b/ foreign forests - nearly all names are preceded by the definite article
and a comment: 'the choice can be left to the discretion of the translator'
co do produktu, proponuję "the product XYZ"
fair - dałbym 'the'