Core Viewpoint - Wehua New Materials (603310.SH) currently does not have any products in production for mosquito extermination, repelling, or prevention [1] Company Summary - Wehua New Materials has clarified on the investor interaction platform that it does not possess any products aimed at mosquito control [1]

Group 1 - The article discusses the outbreak of Chikungunya fever, an acute mosquito-borne infectious disease characterized by high fever above 39°C, severe joint pain, and rashes, with no effective vaccine currently available [1] - The National Health Commission has recommended "acetaminophen" as a preferred antipyretic and analgesic to alleviate key symptoms in the "Chikungunya Fever Diagnosis and Treatment Plan (2025 Edition)" [1] - The Foshan Market Supervision Administration has implemented a real-name registration sales system for 47 types of drugs during the epidemic prevention period, including key controlled medicines for managing fever and joint pain [1] Group 2 - Guangzhou Pharmaceutical Group's subsidiary, Baiyunshan, highlighted the value of traditional Chinese medicine products, such as Baiyunshan Cold Medicine Granules, which contain acetaminophen to effectively relieve high fever, headaches, and body aches [2] - Baiyunshan has established GAP (Good Agricultural Practices) bases for the cultivation of medicinal materials, ensuring the safety, quality, and stability of the ingredients used in their products [2] - The sales of mosquito repellent products in Guangzhou, Shenzhen, and Foshan have surged over 200% in the past week, indicating a significant increase in consumer demand for mosquito prevention [3]

Market Overview - The overall market experienced a slight rise followed by a pullback, indicating a cooling of previously fervent market sentiment [3] - The Shanghai Composite Index rose by 0.01%, while the Shenzhen Component and ChiNext Index fell by 0.37% and 0.01% respectively, with over 4,000 stocks declining and around 1,200 stocks rising [3] Mosquito Prevention Concept Stocks - Mosquito prevention concept stocks surged against the market trend, with Rainbow Group, Runben Co., and Jiaheng Household Products hitting the daily limit [6] - Other related stocks such as Lafang Household Products, Shanghai Jahwa, and Daan Gene also showed strong performance [6] - The rise in these stocks was catalyzed by the recent outbreak of Chikungunya fever, with over 2,000 confirmed cases reported in Guangdong [8] Brain-Computer Interface - A successful clinical trial of an invasive brain-computer interface was reported, leading to a surge in shares of Fudan Zhuhua, which hit the daily limit [14] - The project aims to help patients regain motor functions, with future plans to control complex physical devices [14] Hainan Free Trade Port - The Hainan Free Trade Port's closure date was confirmed for December 18, aligning with previous expectations [17] - Following the announcement, Hainan-related stocks experienced a brief surge, but subsequently faced significant declines, with Hainan Rui Ze and other local stocks dropping sharply [22][23] - The market reaction reflected a traditional pattern where initial enthusiasm leads to profit-taking after news is released [20]