One day one of them is going to have to take over the family business and none of them is keen.

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Analysts have said the arrests have raised questions about succession planning at the company, noting there are as yet no third-generation members of the Kwok family ready to take over the family business.

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When Rhodes died in 2002, Rosenberg's family asked him to take over managing the concrete additive business.

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Mr Elkann is a graduate in industrial engineering, having chosen that subject, he says, because it was more challenging than economics or business, the usual choices of youngsters preparing to take over the family firm.

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