- Helion SA Publishing Group - An active publisher in Poland. Advertises proactively in the Polish media,in the press, on the radio, internet & TV.
- Oli SP. z.o.o - A dealer of second hand printing equipment and machines for making paper or cardboard package.
- Polish Scientific Publishers PWN - A specialist in publishing scientific, educational and professional literature as well as works of reference.
- Wydawnictwo Lekarskie PZWL Ltd. - The oldest medical publishing house in Poland.
- Young Digital Planet SA - An educational software publisher and e-learning technology and content developer, based in Gdansk, Poland.
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