Jin Rong Jie·2025-09-05 04:02Core Logic of Active Optical Communication Sector - The demand for optical communication is driven by the growth of digital economy and increasing computing power needs, as traditional communication architectures struggle to meet bandwidth and latency requirements [2] - The Ministry of Industry and Information Technology has been promoting the self-controllability of the electronic information manufacturing industry, supporting technological upgrades and domestic substitution in core communication equipment [2] - Domestic R&D in optical communication continues to advance, with breakthroughs in materials and technologies that enhance performance and competitiveness in the industry [2] Performance and Analysis of Leading Stocks - Zhongji Xuchuang (300308) holds a strong position in the global optical module market with a market share of approximately 25%-30%, and has seen a significant increase in North American orders [3] - Huagong Technology (000988) is one of the early adopters of 800G silicon optical modules in China, with a recent surge in stock price due to positive market expectations following technological advancements [3] - Yangtze Optical Fibre and Cable (601869) leads in the global optical fibre preform market, reporting a 28% year-on-year increase in net profit, benefiting from accelerated domestic substitution [4] - Hengtong Optic-Electric (600487) has a comprehensive layout in optical communication, with a 20.4% year-on-year revenue growth in the first half of 2024, driven by new business opportunities [4] Characteristics of Stocks with Significant Price Movements - Tengjing Technology (688195) saw a 20% increase in stock price, driven by its precision optical components used in cutting-edge fields, with overseas revenue rising to 45% [5] - Qingshan Paper (600103) opened with a limit-up due to increased demand for optical communication materials, establishing supply relationships with leading optical fibre companies [5] - Tiantong Co., Ltd. (600330) experienced a strong price increase, with high yield rates in its sapphire substrates, directly supplying to major optical module companies [6]