Ryoichi Jinnai Net Worth: Ryoichi Jinnai is a Japanese businessman who has a net worth of $1.1 billion. Ryoichi Jinnai accumulated his net worth as the founder of Promise, Japan's third-largest consumer finance company where he served as the honorary chairman. He retired from the company in 2001, the same year when he lost his only child, son Hideki. Ever since his son's death, Jinnai has been raising cattle and growing mangos and bananas in greenhouses on Japan's northern island of Hokkaido.
Ryoichi Jinnai Net Worth
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