国产GPGPU四小龙将齐聚资本市场，光纤光缆边际向好

Investment Rating - The report maintains an investment rating of "Leading the Market - A" for the communication industry [1]. Core Insights - The domestic GPGPU sector is expected to be a focal point in the capital market in 2026, with companies like Moer Thread and Muxi Co. recently entering the market, and Biran Technology and Tian Shu Zhixin passing the Hong Kong Stock Exchange hearing [5][17]. - The demand for data center optical fibers is anticipated to surge, with early signs of price increases in the market, as domestic and international manufacturers report a 15% price rise in common cable fibers [10][20]. - The report highlights the rapid development of supernode servers as a key beneficiary segment for domestic GPUs, suggesting investment opportunities in upstream components such as copper connections and network interface chips [9][19]. Summary by Sections Industry Dynamics - Moer Thread held its first developer conference, unveiling a new architecture and several products, including the "Huagang" architecture, which supports FP4 to FP64 precision calculations, with a 50% density increase and a 10-fold efficiency improvement [6][17]. - Muxi Co. achieved a market capitalization exceeding 280 billion after its debut on the Sci-Tech Innovation Board, positioning itself as a strong competitor in the domestic GPGPU market [7][18]. - Biran Technology has passed the Hong Kong Stock Exchange hearing, with its BR100 series achieving peak performance at the PFLOPS level, and it has secured sales agreements valued at 1.24 billion [8][19]. - Tian Shu Zhixin has a broad customer base across various sectors, with GPU shipments reaching 15,700 units in the first half of 2025 and revenues of 324 million [8][19]. Market Overview - The overall market saw a slight decline during the week of December 15-19, 2025, with the Shanghai Composite Index rising by 0.03% while the Shenzhen Component Index and the ChiNext Index fell by 0.89% and 2.26%, respectively [12][22]. - The top-performing sectors included liquid cooling, optical cables, and satellite communications, with weekly gains of 15.85%, 11.88%, and 10.73% [12][22]. Investment Recommendations - The report suggests focusing on companies in the following sectors: - Domestic supernodes: Unisplendour, ZTE, Inspur, Huaqin Technology, Huafeng Technology, Xinke Materials, Shengke Communication, and Heshun Petroleum [22]. - Commercial aerospace: Shanghai Hanxun, Xinke Mobile, Fenghuo Communication, Mengsheng Electronics, Haige Communication, and Qian Zhao Optoelectronics [22]. - Optical fibers and cables: Zhongtian Technology, Hengtong Optic-Electric, Changfei Fiber, Yongding Co., Taichen Optoelectronics, Shijia Photonics, and Changxin Bochuang [22].