Market performance was mixed today. Mainland A-share markets saw a correction, leading the Hang Seng Index to close slightly lower by 0.03% after a session that largely tracked the previous day's gains on the mainland. Geopolitical tensions provided a backdrop, with reports of Iranian forces firing on a U.S. F-35 aircraft in the Persian Gulf, though market impact was limited. The technology sector was a major focus following a significant industry development. At the International Circuit and System Symposium in Shanghai, Huawei officially unveiled the "Tao (τ) Law," a new guiding principle for semiconductor development. This approach shifts from traditional geometric scaling to a "time scaling" methodology, emphasizing vertical stacking to advance chip performance. This is seen as a strategic move to enhance China's self-sufficiency in chip technology, potentially circumventing the need for extreme ultraviolet (EUV) lithography systems. Huawei has already designed and mass-produced 381 chips based on this principle over the past six years, with projections to achieve performance equivalent to 1.4-nanometer process technology by 2031. This news spurred significant gains in related stocks: Hua Hong Semiconductor (01347) surged over 10%, SMIC (00981) rose more than 5%, and ASMPT (00522) advanced nearly 11%. Boya Top (02889), which is deeply integrated with the HarmonyOS ecosystem, saw its stock jump over 15%.
The momentum from last week's discussion on Rubin rack PCB demand continued. Sheng Hong Technology (02476) gained over 8%, while Kingboard Laminates (01888) rose over 6%. As the AI industry's focus shifts from model training to inference applications, companies involved in data center infrastructure also performed well. Beneficiaries included liquid cooling and power supply firm BYD Electronic (00285) and AI server power concept stock NOVOSENSE (02676), both up over 6%. AAC Technologies (02018), a supplier of cooling components, gained over 3%.
Lenovo Group (00992) released strong Q4 FY25/26 results, with double-digit year-on-year growth in both revenue and profit, exceeding its highest targets. Management's commentary on the diffusion of AI inference demand beyond large cloud providers to enterprise clients has opened new growth avenues, leading several brokerages to raise their target prices. The stock rose over 15% in recent days.
The robotics sector remains a hotbed of investment. In 2025, China's embodied AI and robotics field saw total financing of 735 billion yuan across 744 deals. So far in 2026, an additional 370 billion yuan has been invested, pushing the cumulative total past 1.1 trillion yuan. Middle Eastern capital, particularly from Saudi Arabia and the UAE, is a major investor in Chinese robotics firms, with notable Western institutional absence. Estun (02715), a leading industrial robotics manufacturer in China, surged over 20%.
A major coal mine accident in Shanxi province is expected to intensify domestic safety inspections, potentially tightening supply. Coupled with seasonal demand increases, this supports expectations for a second round of coal price increases. Related stocks like L&L Energy (01277) rose over 8%.
In the chemicals sector, news of a delayed U.S. phase-out of certain refrigerants is seen as supportive for third-generation refrigerant demand in China. Dongyue Group (00189) surged over 15% today.
Sector Focus: Guinea's Minister of Mines has indicated that a formal bauxite export control plan will be announced in June, with the core aim of controlling volume to support prices. Guinea accounts for over one-third of global bauxite production. This follows months of similar rhetoric, but the minister's direct logic—that current prices are squeezing smaller miners and reducing government tax revenue—suggests more decisive action this time. The target is reportedly to reduce annual exports from 183 million tons to approximately 150 million tons, a cut of about 16%. This potential supply reduction, alongside other global supply-side disruptions, is expected to significantly impact the aluminum industry landscape. Related Hong Kong stocks include Nanshan Aluminium International (02610), CHALCO (02600), and CHINAHONGQIAO (01378). Separately, Chile's national copper commission has revised its 2026 copper production forecast downward to 5.3 million tons while raising its price forecast. Related Hong Kong stocks include ZIJIN MINING (02899) and CMOC (03993).
Stock Spotlight: YANKUANG ENERGY (01171) The recent major coal mine accident in Shanxi is expected to trigger a new round of intensive safety inspections and production suspensions, with stricter limitations likely for smaller private and consolidated mines. This environment is favorable for major coal producers. YANKUANG ENERGY, as China's fourth-largest coal enterprise, is well-positioned to benefit from potential price increases, with approximately 74% of its coal sales being spot market-based, significantly higher than the industry average of 35-40%. The company has substantial resource reserves domestically and internationally. Its 2025 acquisition of Northwest Mining added significant resources. Production capacity stands at 226 million tons per year, with 2026 output planned between 186-190 million tons. Its Australian subsidiary achieved record production in 2025. The company has a diversified portfolio including potash and molybdenum resources. Its coal chemical and new materials business, with total capacity exceeding 11 million tons, serves as a second growth curve, showing strong profit growth in 2025. Its equipment manufacturing arm has robust order books both domestically and internationally. The company's order book is primarily long-term contracts, providing stability, while its spot sales offer high earnings elasticity. It is also developing wind, solar, energy storage, and hydrogen projects, creating a "coal + new energy" dual-drive model. As a state-owned enterprise under Shandong Energy Group, it benefits from ongoing reforms and potential asset injections, with a target of reaching 300 million tons of raw coal production by 2030.
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