Tervakoski Oy
Tervakoski Oy is a Finnish paper industry company. Its paper mill, founded in 1818, is located in the village of Tervakoski in Janakkala, Kanta-Häme. Since 1999, it has been owned by the Austrian company Delfort Group.
By the end of 2022, the company made €207,9 million in turnover and its result was €13 million with the company's net profit percentage being 6.28%.
In the years 1956–1984, the company gained a controversial reputation when a paper mill polluted Tervajoki River and Lake Kernaala with PCB compounds. PCB concentrations are still so high that restrictions have been placed on the use of fish in the lake.