Due to his activities, the paper mill towns of UPM such as Jämsänkoski, Kaipola and Valkeakoski became models for Finnish industry.
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The central argument of this study is that Rudolf and Juuso Walden created a paternalist hold on the Valkeakoski industrial community, even if other industrial plants had already abandoned this idea.
In 2010, PMT Italia has founded PMT Winding Oy in Tehtaankatu, Valkeakoski, Finland.