As per the documents from the Hong Kong Stock Exchange (HKEX), on December 22, 2025, Longxun Semiconductor (Hefei) Co., Ltd. officially filed a listing application with the HKEX, appointing CSC International as its sole sponsor. This company is dedicated to the research and development of high - speed mixed - signal chips. Its products find applications in a variety of fields, including intelligent terminals and artificial intelligence (AI). (Explanation of modifications: "Submits" is changed to "Files" as "file an application" is a more commonly used and idiomatic expression in English when talking about official submissions. "With products applied in" is rephrased to "Its products find applications in" to make the sentence more natural and fluent. Also, "AI" is spelled out as "artificial intelligence" at the first mention for better clarity for readers who may not be familiar with the abbreviation.)