Cleantech Venture Day is the biggest cleantech investment event in the Nordics.Since 2006 the event has brought together hundreds of investors with the leading cleantech companies. Cleantech Venture Day will be organized in Helsinki 3-4 June 2019 with the top Nordic cleantech companies, investors and other key enablers. The event will take place at the Finlandia Hall. Matti Malkamäki, the CEO o…