Martti Yrjö Mikael Ronkainen
Chairperson, Konsulttitoimisto Martti Ronkainen Oy
FI4 active roles
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Martti Yrjö Mikael Ronkainen is a Finnish director with 4 active roles across Finnish companies, including Chairperson at Konsulttitoimisto Martti Ronkainen Oy.