I invest in Pyro and HPQ because, as an entrepreneur, I am immensely impressed by what CEO's like Peter Pascali and Bernard Tourillon have achieved over the past decades in expanding their companies in unexplored and unprecedented industrial applications.

These are extremely rare examples of men with a vision and a passion for entrepreneurship. Their courage and perseverance and that of their impressive teams of scientists and researchers have already led to breakthroughs in commercial applications in areas such as waste processing, 3D printing and applications such as their Dross business. Numerous other business lines, some of which are in their final stages of development, are strategic blockbusters.

I quote Peter Lynch, the legendary investor and manager of the Magellan Fund at Fidelity; "Explain to me how a company can fail that has no debt and a backlog of more than $30 million."

The companies are firmly anchored in the hands of their largest shareholders so that the continuity of the companies is guaranteed.

These are exceptional investment opportunities in public companies that are doing pioneering work and pursuing a business strategy that can lead to the level of a multinational with large profit margins.

However, this is not an investment suitable for timid weasels who expect big profits in the short term and have no experience with investing in companies.