| General info : | | Painoyhtymä Oy was a Finnish printing company. The company was founded in the 1960s, and existed until April 2019 when it was bought by Bookwell Oy. | |
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| Source : | | (www.itavayla.fi/teksti/painoyhtyma-jatkaa-toimintaansa--bookwell-osti-porvoolaisen-kirjapainon-liiketoiminnan-6.2.40928.a6349a9949) | |
| Source : | | Kauppalehti (www.kauppalehti.fi/yritykset/yritys/painoyhtyma+oy/01289977) | |
| Source : | | Official Website (www.painoyhtyma.fi/) | |
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| Copied Wikipedia parts under license : | | | |