「White-Haired Stock God」 Evaluates Han Stocks Foosung: The Big Winner in the Bottleneck Caused by China's Export Controls to Japan

On June 15, Serenity, widely known as the "White-Haired Stock Guru," posted on social media: "I did say that Foosung (stock code: 093370) would emerge as a major beneficiary of export control bottlenecks between China and Japan. While most investors are still targeting a 7.5% index-linked return, Foosung could rally 21% in a single day by capitalizing on this bottleneck opportunity." Per market data, South Korea’s Foosung surged 21% intraday to 22,800 Korean won. It is reported that Foosung is a leading South Korean fluorine chemical firm and a key, low-profile player in the semiconductor materials supply chain. Its core operations focus on manufacturing specialty gases for semiconductors, secondary battery materials, and refrigerants, with fluorine chemicals forming its foundational business. The company is a direct supplier to Samsung Electronics and SK Hynix; as a major global provider, its tungsten hexafluoride accounts for roughly 10% of the world’s total supply.