科技板块整体低迷，沪指半日收跌0.42%

Market Overview - On May 15, A-shares experienced a decline, with the Shanghai Composite Index falling by 0.42% to 3389.75 points, the Shenzhen Component Index down by 1.12%, and the ChiNext Index decreasing by 1.35% [1][2] - The total trading volume for A-shares reached 765.59 billion yuan [1] Economic Indicators - The People's Bank of China conducted a 645 billion yuan reverse repurchase operation with a fixed interest rate of 1.40%, resulting in a net withdrawal of 219.1 billion yuan for the day [2] Industry Insights - The China-U.S. Economic and Trade Cooperation Exchange Conference was successfully held in Washington, emphasizing the long-standing and mutually beneficial trade relationship between the two countries [3] - Despite current challenges, there is significant potential for future cooperation, particularly in maintaining global supply chain stability [3] Sector Performance - Port and shipping stocks saw a resurgence, with notable increases in shares of Nanjing Port, Lianyungang, and Ningbo Maritime [3] - Beauty and personal care stocks also performed well, with companies like Jieya Co. and Furuida reaching their daily limit up [3] - Synthetic biology stocks were active, with companies such as Chuaning Biological, Jindawei, and Hainan Haiya hitting their daily limit up [3] Sector Trends - The synthetic biology sector is expected to grow, with significant applications in various fields, although it currently holds a limited share in the overall chemical market [4] - The international landscape for synthetic biology is primarily dominated by the U.S. and Europe, which may influence domestic policy and development [4] Company Profiles 1. Chuaning Biological: Focuses on synthetic biology with products in production and plans to expand into high-value products and efficient strains by 2025 [7] 2. Jieya Co.: A leading manufacturer of wet wipes, shifting focus towards wet toilet paper and expanding into medical devices and cosmetics [8] 3. Furuida: Aims to build a comprehensive health industry chain, leveraging R&D strengths in cosmetics and pharmaceuticals [8] 4. Jindawei: Positioned as a leader in the health supplement market, benefiting from market expansion and stable financial performance [8]