突然爆发，这一板块涨停潮

Market Overview - On the morning of the 4th, A-shares showed a rebound after a dip, with the ChiNext Index rising over 1% at one point; Hong Kong stocks also increased, with the Hang Seng Technology Index up over 1% [1] - By midday, the Shanghai Composite Index slightly rose by 0.04% to 3879.52 points, the Shenzhen Component increased by 0.35%, the ChiNext Index rose by 0.76%, and the STAR 50 Index was up by 0.92% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 10,403 billion [1] Robotics Sector - The robotics concept stocks experienced a strong surge, with several stocks hitting the daily limit, including Haichang New Materials and Hwa Wei Co., both up by 20%, and Jiangsu Leili rising over 10% [5] - Notably, the stock of Haiwang Biological achieved a seven-day consecutive limit-up [1] Brokerage Sector - The brokerage sector saw significant gains, with Changcheng Securities rising over 4% and other firms like Xiangcai Securities and Huatai Securities also following suit [3] - According to China Aviation Securities, the brokerage industry is undergoing profound supply-side reforms and functional transformations, with expectations for improved profitability and valuation in the future [3] Commercial Aerospace Sector - The commercial aerospace sector became active again, with stocks like Aerospace Hanyu and Tender Shares rising over 10% [11] - The establishment of a dedicated Commercial Aerospace Department by the National Space Administration indicates a push for high-quality development in China's commercial aerospace industry [13] - The action plan for promoting high-quality and safe development in commercial aerospace from 2025 to 2027 aims for significant growth in the industry scale and innovation capabilities [13]