Nvidia(US:NVDA) SINOLINK SECURITIES·2025-07-20 08:06Investment Rating - The report suggests focusing on sectors driven by domestic AI development such as servers and IDC, as well as sectors benefiting from overseas AI development like servers and optical modules [4]. Core Insights - Nvidia's H20 sales resumption in China has positively impacted the data center sector, leading to a surge in related stocks, indicating improved market sentiment regarding computing power supply [1][2]. - ASML and TSMC reported better-than-expected Q2 2025 earnings, driven by strong AI demand, with ASML's net sales reaching €7.7 billion, up 23.2% year-on-year, and TSMC's revenue at NT$933.8 billion, up 38.6% year-on-year [1][59]. - The release of new AI models is accelerating technological iterations, with increased demand for inference and agent computing power [1]. - Companies like Zhongji Xuchuang and Xinyi Sheng have reported Q2 2025 earnings that exceeded market expectations, reflecting positive trends in the downstream industry [1][9]. Summary by Sections Server Sector - The server index increased by 4.59% this week and 3.96% this month, driven by accelerated AI computing investments from North American cloud providers like Google and Meta, which plan to invest $25 billion and hundreds of billions respectively in AI infrastructure [2][6]. - TSMC's optimistic forecast for 2025, expecting a 30% year-on-year sales growth, further validates strong downstream AI demand [6][59]. Optical Module Sector - The optical module index rose by 9.17% this week and 10.33% this month, with North American cloud providers driving demand for 800G optical modules [9]. - Zhongji Xuchuang and Xinyi Sheng are key suppliers in this sector, with projected net profits showing significant year-on-year growth [9]. IDC Sector - The IDC index increased by 5.28% this week and 4.31% this month, with the resumption of H20 supply alleviating previous chip shortages, indicating a potential turning point for the AIDC industry [12]. - The report anticipates continued growth in capital expenditures from domestic internet giants in the second half of 2025, supporting the domestic computing power chain [12].