6) Ralph Sonnenberg & family – Net Worth: $1.5 Billion
Blinds baron Ralph Sonnenberg is the chairman and CEO of Hunter Douglas N. V. The company, which was founded by his father, makes window coverings and architectural products.
5) Hans Melchers – Net Worth: $2.1 Billion
This 76-year-old billionaire earns most of his wealth from a large stake in HAL Trust, an international investment company based in Monaco. He is a passionate fan of bridge.
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