HELSINKI, Finland--(BUSINESS WIRE)--Coolbrook, a transformational technology company dedicated to decarbonising heavy industry and industrial processes, has appointed renowned Finnish business leader Veli-Matti Mattila as Chairman of the Board effective immediately. Mattila brings decades of international leadership experience and board expertise to support Coolbrook’s next phase of commercial growth, industrial execution, and global scale-up. Veli-Matti Mattila is one of Finland’s most experie