601869，“五天四板”

Core Viewpoint - Changfei Fiber has recently gained attention in the market for its hollow-core fiber products, particularly in relation to data centers, although this new business has not yet significantly impacted the company's financial data [3][4]. Group 1: Company Overview - Changfei Fiber is a leading global provider of optical fiber preforms, optical fibers, optical cables, and integrated solutions, producing a wide range of standard optical fiber preforms, optical fibers, and cables widely used in the telecommunications industry [3]. - The company reported a revenue of 6.384 billion yuan in the first half of 2025, representing a year-on-year increase of 19.37%, while the net profit attributable to shareholders was 296 million yuan, a decrease of 21.69% [5]. Group 2: Hollow-Core Fiber Technology - In March 2023, Changfei Fiber announced a significant research achievement with its hollow-core fiber, achieving a minimum loss of 0.05 dB/km and a single fiber length exceeding 20 kilometers, which is the lowest reported attenuation globally [4]. - Hollow-core fiber technology is considered a disruptive innovation in next-generation optical communications, with a signal transmission speed approximately 47% faster than conventional fibers and a latency reduction of about 31% [4]. - The hollow-core fiber is expected to break existing capacity bottlenecks in high-capacity, long-distance systems such as submarine communication networks and power communication networks due to its low attenuation and nonlinearity [4]. Group 3: Market Context and Future Prospects - The demand for optical fiber and cable products related to data centers currently represents a small proportion of the global market, and hollow-core fiber applications are still in the early stages without stable pricing or profit levels [5]. - Recent developments in the industry, such as NVIDIA's launch of the Spectrum-XGS Ethernet technology, are expected to drive the accelerated application of hollow-core fiber in data center interconnect (DCI) scenarios [6]. - The demand for hollow-core fiber is anticipated to grow rapidly as DCI connection needs increase and Ethernet technology penetrates long-distance transmission [6].