SINOLINK SECURITIES·2025-05-19 03:00Investment Rating - The report suggests focusing on domestic AI development-driven sectors such as servers, IDC, switches, and connectors, as well as overseas AI development-driven sectors like servers and optical modules [4] Core Insights - The U.S. Department of Commerce upgraded chip controls against China, banning Huawei's Ascend chips and limiting U.S. chips for AI training in China, which is expected to benefit domestic chip suppliers [1][6] - NVIDIA's AI chip shipments fell short of expectations, leading to a projected slight decline in capital expenditures from domestic internet companies in the short term, but this will accelerate the domestic replacement of AI chips [1][5] - The establishment of an AI chip R&D center in Shanghai by NVIDIA and a significant order for 18,000 GB300 servers from Saudi Arabia highlight the global strategic layout and increasing demand for high-speed optical modules and liquid cooling technology [1][6] Summary by Sections Communication Sector Overview - The telecom operators achieved a total revenue of 446.9 billion yuan in the first quarter of 2025, a year-on-year increase of 0.7%, with a total telecom business volume growth of 7.7% [3][12] - The optical module exports saw a growth of 19.6% year-on-year in March, with a cumulative growth of 3.18% from January to March 2025 [28][30] Server Sector - The server index experienced a slight decline of 2.51% this week, primarily due to delays in NVIDIA's GB200 deliveries and lower-than-expected capital expenditures from companies like Alibaba [5][6] - The report anticipates that the domestic AI chip supply will benefit from the U.S. chip control upgrades, which may lead to a long-term increase in AI-driven business growth [5][6] Optical Module Sector - The optical module industry is showing signs of recovery, with leading companies like NewEase and Zhongji Xuchuang reporting significant revenue growth of 179% and 264% respectively in Q1 2025 [7] - The overall revenue of the optical module sector increased by 48% year-on-year, driven by AI computing demand and cost reduction measures [7] IDC Sector - The IDC industry is expected to grow driven by increasing AI computing demand and supportive policies, with resources concentrating on companies that meet energy consumption standards and have sufficient project reserves [2]