寒武纪，新股王！PCB龙头，历史新高

Market Overview - The A-share market experienced a V-shaped reversal in the afternoon, with the ChiNext Index leading the gains, and over 2800 stocks rising [1] - The Shanghai Composite Index rose by 1.14%, the Shenzhen Component Index increased by 2.25%, and the ChiNext Index surged by 3.82% [1] - The total market turnover exceeded 30 trillion yuan, marking the fourth occurrence in A-share history [1] Key Stocks and Sectors - Cambrian Technology and SMIC both reached historical highs, with Cambrian's stock price surpassing 1500 yuan, closing at 1587.91 yuan per share, making it the new stock king of A-shares [1] - PCB (Printed Circuit Board) concept stocks saw significant gains, with Shenghong Technology rising over 19% and achieving a historical high, with a trading volume exceeding 23 billion yuan [1][2] - The CPO (Co-Packaged Optics) sector continued its upward trend, with Tianfu Communication hitting the daily limit and other stocks like Changxin Bochuang and Dekeli also showing strong performance [1][4] Shenghong Technology Performance - Shenghong Technology reported a revenue of 9.031 billion yuan for the first half of 2025, a year-on-year increase of 86%, and a net profit of 2.143 billion yuan, up 366.89% [4] - The company specializes in the R&D, production, and sales of high-density printed circuit boards, with applications in AI, automotive electronics, and new communication technologies [4] - Shenghong Technology is advancing its H-share issuance to fund high-end capacity expansion in Southeast Asia and PCB technology R&D [4] CPO Sector Insights - The CPO sector is experiencing strong performance, with multiple companies reporting impressive mid-year results, such as Tianfu Communication's net profit growth of 37.46% [7] - The demand for high-speed optical communication modules is expected to rise due to the integration of AI and infrastructure development [7] Solid-State Battery Sector - Solid-state battery concept stocks faced some adjustments, with companies like Keheng and Liyuanheng seeing declines of over 10% and 5%, respectively [8] - Keheng reported a revenue of 799 million yuan for the first half of 2025, a year-on-year decrease of 29.15%, with a net loss of 97.36 million yuan, widening by 60.01% [9] - Analysts suggest that as the solid-state battery industry matures, upstream material suppliers will benefit, particularly those involved in sulfide electrolytes [9][10]