美或将限制关键软件出口，国产替代势在必行

Investment Rating - The report maintains a "Positive" investment rating for the software and services industry [7]. Core Viewpoints - The U.S. is set to impose a 100% tariff on Chinese goods and export controls on all critical software starting November 1, 2025, which is expected to accelerate the domestic software replacement process in China [2][5]. - The report highlights the importance of focusing on domestic chip supply chains, operating systems, and Huawei's supply chain as key investment opportunities due to the anticipated acceleration in the domestic software industry [2][10]. Summary by Sections Event Description - On October 10, 2025, U.S. President Donald Trump announced additional tariffs and export controls on critical software, impacting electronic design automation, industrial software, and foundational software [5]. Event Commentary - The U.S. has previously implemented export controls on EDA software, indicating a trend of increasing restrictions on technology exports to China. This latest move is seen as a further escalation in the U.S.-China tech rivalry, necessitating a shift towards domestic alternatives in critical technology sectors [10]. - The report emphasizes that the domestic software industry has made significant progress in terms of technology, policy, and market development, achieving compatibility with international standards and widespread application in key sectors such as government, finance, and energy [10]. - The upcoming policy assessment years of 2025 and 2027 are expected to drive further acceleration in the industry, with a focus on investment opportunities in domestic chip supply chains, operating systems, and Huawei's ecosystem [10].