HK Stock Market Move | YOFC (06869) surged over 20% to a new high in early trading, Nvidia releases Scale-across network.

YOFC (06869) rose more than 20% in early trading, reaching a high of 44.86 Hong Kong dollars, hitting a historical high. As of the time of writing, it rose by 19.07%, closing at 43.96 Hong Kong dollars, with a trading volume of 1.22 billion Hong Kong dollars. In terms of news, NVIDIA recently announced the launch of NVIDIA Spectrum-XGS Ethernet. This cross-regional scaling technology can combine multiple distributed data centers into a billion-watt AI super factory. With the increasing demand for AI, the power and capacity of data centers within a single facility have reached their limits. In order to expand data centers, it is necessary to break the limitations of buildings, as existing commercial Ethernet network infrastructure cannot meet the demands due to high latency, high jitter, and unpredictable performance. It is pointed out by Open Source Securities that scale-across technology is expected to become the "third pillar" of AI computing after vertical scaling (scale-up) and horizontal scaling (scale-out), and further drive the development of AI computing power interconnection industry. It is crucial to pay high attention to related sectors such as optical interconnection opportunities. Zhongtai's previous research report pointed out that hollow-core optical fibers, which use air as a transmission medium, have two main characteristics of lower latency and lower loss, making them the main variety of interconnection for future AI data centers. In July 2025, the first commercial deployment of hollow-core optical fiber by China Mobile Limited is expected to accelerate the commercialization process, with Yangtze Optical Fibre And Cable Joint Stock being the only winner, with an actual winning bid price of approximately 36,000 yuan per core kilometer. The firm stated that Yangtze Optical Fibre And Cable Joint Stock (leading in hollow-core technology production capacity and having won bids in related projects) should be closely watched.