【A-share Closing Review: Shanghai Index Drops 0.36%, Liquid Cooling Servers and Computing Power Concepts Surge】Jin10 Data December 19 - Today, the three major indices opened lower collectively and maintained a fluctuating trend in the morning. In the afternoon, the indices rebounded after hitting a low, with the Shenzhen Component Index and ChiNext Index both turning positive. By the close, the Shanghai Index fell 0.36%, the Shenzhen Component Index rose 0.61%, and the ChiNext Index rose 0.52%. On the market, the liquid cooling server concept surged, with multiple stocks such as Highcloud Technology, Ruijie Networks, Kangsheng Shares, and Jialitu hitting the daily limit. The copper cable high-speed connection concept strengthened, with stocks like Huamai Technology, Changfei Optical Fiber, Derun Electronics, and Xinke Materials also hitting the daily limit. The computing power leasing concept was active, with stocks like Aoya Shares, Runze Technology, Nanling Technology, and Inspur Information hitting the daily limit. Sectors such as communication equipment, software services, IT equipment, the internet, components, and semiconductors saw the largest gains; while sectors like commercial chains, public transportation, coal, brewing, petroleum, and electricity experienced the largest declines. (Source: Jin10 Data)