东莞首富母子完成交接班，儿子成700亿市值公司唯一实控人

Group 1 - The announcement of a share transfer marks the formal completion of the power transition within the Dongguan wealthiest family, with Guo Meilan transferring her shares to her son Zhang Yushuang [2] - Guo Meilan transferred 71.75% of Yuyuan Electronic and 74.63% of Xinjing Technology to Zhang Yushuang, resulting in her no longer holding shares in these companies and thus not indirectly holding shares in Dongyangguang [2] - Zhang Yushuang will indirectly hold 100% of Dongyangguang Group through Yuyuan Electronic and Xinjing Technology, equating to 1.166 billion shares or 38.70% of the total share capital of the listed company [2] Group 2 - Zhang Yushuang, aged 38, is the current chairman of Dongyangguang Group and has a background in pharmaceutical research, having held various positions within the company since 2011 [3] - Dongyangguang Group focuses on three main industries: electronic new materials, biomedicine, and health preservation, with total assets exceeding 80 billion yuan and ranking among China's top 500 private enterprises [3] - As of December 30, Dongyangguang's stock price was 22.98 yuan per share, reflecting a 2.91% increase, with a total market capitalization of 69.16 billion yuan, and the market value of shares held by Dongyangguang Group is approximately 26 billion yuan [3]