Danish UC submarines were built by the entrepreneur who is CEO of what company?
Peter Madsen (inventor) Peter Langkjær Madsen (] ; born 12 January 1971) is a Danish aerospace engineering enthusiast, "art engineer", submarine builder, entrepreneur, co-founder of the non-profit organization Copenhagen Suborbitals, and founder and CEO of RML Spacelab ApS.
Harri Johannesdahl Harri Johannesdahl (born August 22, 1961) is a Finnish businessman and entrepreneur, who currently serves as the CEO for Coolbrook Ltd., an engineering company developing petrochemical technology. Coolbrook Ltd announced in February 2017, that the company would receive EUR 3.6 million from Tekes, a Finnish funding agency for innovation, for the development of plastic technology innovations using the ethene cracking method.