Youyan Silicon announced that the company plans to purchase a total of 71.89% of the shares of Shandong Youyan Ace Semiconductor Materials Co., Ltd. by issuing shares and paying cash, and purchase 14.98% of Shandong Youyan Semiconductor Materials Co., Ltd.'s shares by issuing shares, while raising supporting capital. On September 11, 2026, the board of directors of the company reviewed and approved the transaction plan and summary. As of the disclosure date of the announcement, the audit and evaluation work has not yet been completed. Shareholders' meetings will not be held. Stock trading will resume from the opening of the market on September 14, 2026.

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