Changjiang Securities·2026-01-14 09:44Investment Rating - The industry investment rating is "Positive" and is maintained [10] Core Insights - The communication sector rose by 1.50% in the first week of 2026, ranking 28th among primary industries in the Yangtze River region. Year-to-date, the sector has also increased by 1.50% [2][5] - NVIDIA launched the Rubin platform at CES 2026, which integrates computing, storage, and networking, enhancing the demand for high-speed optical interconnects. This is expected to increase optical connection density and bandwidth requirements [6][8] - Chinese enterprises and institutions have applied to the ITU for over 200,000 low-orbit satellites by the end of 2025, accelerating the layout of low-orbit satellite internet and securing scarce frequency resources [7][8] Summary by Sections Market Performance - In the first week of 2026, the communication sector's stock performance included significant gains for companies with market capitalizations over 8 billion yuan, with Nanjing Panda (+49.1%), Tongyu Communication (+42.3%), and Dawi Technology (+35.3%) leading the gains. Conversely, Hengbao Co. (-8.1%), Cambridge Technology (-8.0%), and Dingtong Technology (-7.6%) experienced the largest declines [5] NVIDIA Rubin Platform - The Rubin platform features a modular Superchip and full liquid cooling, significantly increasing computing density. The NVL72 unit integrates 72 Rubin GPUs, providing approximately 200 PFLOPS NVFP4 computing power, with internal bandwidth of 14.4TB/s and external bandwidth of 1.6Tb/s [6] - The platform introduces a POD-level context memory system that alleviates inference KV cache bottlenecks, allowing for low-latency sharing across GPUs and nodes, with a single GPU card capable of approximately 16TB of context storage [6] - The integrated architecture of the Rubin 576 Superpod enhances optical interconnect density, with a total bandwidth of approximately 260TB/s [6] Satellite Projects in China - The report highlights that the large-scale application for low-orbit satellite constellations by Chinese entities is aimed at securing limited space resources, thus accelerating the development of low-orbit satellite internet [7] Investment Recommendations - The report recommends several companies across various segments: - Telecom operators: China Mobile, China Telecom, China Unicom - Optical modules: Zhongji Xuchuang, Xinyi Sheng, Tianfu Communication - Liquid cooling: Yingweike - Hollow-core optical fibers: Fenghuo Communication, Hengtong Optic-Electric - Domestic computing: Runze Technology, Guanghuan New Network - AI applications: Bosijie, Heertai, Tuobang Co. - Satellite applications: Huace Navigation, Haige Communication [8]