A股早评：三大指数大幅低开，沪指低开2.49%，AI硬件大跌！通富微电、神州数码跌停，硕贝德、立讯精密等多股跌超9%

Core Viewpoint - Recent escalation in China-U.S. trade tensions has led to a significant decline in A-share indices, with the Shanghai Composite Index opening down 2.49%, the Shenzhen Component down 3.88%, and the ChiNext Index down 4.44% [1] Market Performance - The CPO and liquid cooling server concepts experienced the largest declines, with companies such as Tongfu Microelectronics (002156) and Digital China hitting the daily limit down, while others like Shokubai (300322) and Luxshare Precision (002475) fell over 9% [1] - The humanoid robot sector also saw substantial drops, with Haichang New Materials and Sanhua Intelligent Control (002050) declining more than 8% [1]