两市现分化，沪指半日下跌0.52%

Market Overview - On May 16, the Shanghai Composite Index fell by 0.52% to 3363.32 points, while the Shenzhen Component Index rose by 0.08% and the ChiNext Index increased by 0.16% [1][2] - The A-share market had a half-day trading volume of 686.9 billion yuan [1] Monetary Policy - The People's Bank of China conducted a 7-day reverse repurchase operation of 106.5 billion yuan at a fixed rate of 1.40%, with a net injection of 29.5 billion yuan for the day [2] Urban Development Policy - The State Council issued opinions on advancing urban renewal actions, aiming for significant progress by 2030 in urban development mechanisms, safety, service efficiency, and environmental improvement [3] State-Owned Enterprise Reform - The State-owned Assets Supervision and Administration Commission emphasized the need for high-quality completion of state-owned enterprise reforms by 2025, focusing on addressing deep-seated institutional challenges [3] Sector Performance - The PEEK materials sector saw significant gains, with New Han New Materials hitting a 20% limit up and Huami New Materials rising over 15% [3] - Other strong-performing sectors included industrial mother machines, automotive parts, and reducers [3] PEEK Materials Market - PEEK materials exhibit excellent properties such as high-temperature resistance and chemical stability, with a projected global market size of approximately 6.1 billion yuan by 2024, expected to grow at an annual rate exceeding 10% [4] Company Insights - Zhongyan Co., Ltd. is the fourth global company to achieve an annual PEEK production capacity of over 1,000 tons, leading in PEEK production in China [6] - Chongde Technology is advancing its PEEK bearing products for energy generation and petrochemical applications [6] - Daon Co., Ltd. is expanding its production capacity and new product offerings in thermoplastic elastomers [6] - Kangtuo Medical is enhancing market penetration of PEEK products and promoting innovative medical solutions [7]