Core Viewpoint - The control change at Kanghua Biotech, led by its actual controller Wang Zhentao, signifies the potential disintegration of the vaccine empire he built, as both of his listed companies face significant challenges [1][8]. Group 1: Company Performance and Challenges - Kanghua Biotech, once a high-flying stock, saw its share price peak at 996 yuan, with a market cap exceeding 17.8 billion yuan, but has since faced a decline due to falling performance and increased competition [2]. - The company's core product, the human diploid rabies vaccine, accounts for over 97% of its revenue, but its market position is being eroded by competitors like Kangtai Biotech, which achieved a first-year issuance of 3.37 million doses, nearly matching Kanghua's 3.89 million doses, a year-on-year drop of 43.83% [4]. - In 2024, Kanghua Biotech's revenue is projected to decline by 9.23%, while sales expenses are expected to rise by 10.68% to 547 million yuan, and R&D investment has been cut by 47.81% [5]. Group 2: Financial and Governance Issues - The net profit attributable to the parent company plummeted from 829 million yuan in 2022 to 20.7 million yuan in Q1 2025, a staggering year-on-year drop of 86.14% [6]. - Wang Zhentao's other business, Aokang International, has also faced significant losses, with cumulative losses exceeding 670 million yuan from 2022 to 2024, and a projected loss of 87 million yuan in the first half of 2025 [6]. - High equity pledge rates are concerning, with Wang Zhentao's stake in Kanghua Biotech pledged at 89.20%, and Aokang Group's stake at 71.91%, indicating financial strain [2][3]. Group 3: Strategic Moves and Future Outlook - To address its reliance on a single product, Kanghua Biotech is attempting to expand internationally by licensing the development of a six-valent norovirus vaccine, with a potential transaction value of 270 million USD, although clinical trials have not yet commenced [7]. - The transition of control at Kanghua Biotech reflects broader trends in the industry, where the lack of core competitive advantages leads to the unraveling of previously successful cross-industry ventures [8].