Biography & Early Wealth Journey

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Investors agreed, and the company's stock had a surge of its own, spiking by nearly 2000 percent practically overnight. The company hit a market cap of almost $5 billion, and as Ryu is reportedly its largest stockholder with a stake of around 40 percent, his net worth hit the billion-dollar mark along with it.

Forbes points out that the company's flash of success could prove to be temporary, and it still has to prove itself in a complex market in which it has no prior experience. But it appears to be investing heavily in the new business, having reportedly announced both a $70 million manufacturing plant in a $25 million research and development center in the port city of Busan.

Primary Income Streams & Multi-Million Contracts

Ryu has been with Kumyang since 1998, when he came onboard as the company's new finance manager. Three years later, he was CEO, and for most of that time the company was focused on the manufacture of certain agents for making plastic foam, used not just in sneakers but floor mats, synthetic leather, and other products.

But that's not as profitable as rechargeable lithium batteries, which have become a boom industry in Korea. Kumyang isn't the only Korean company to see high spikes in revenue from getting into the battery business, as companies like Ecopro and Chunbo have seen similar trajectories in recent years.

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