The Nikkei 225 index has reached a historic high, surpassing 69,000 points. In related tech news, SK Hynix is preparing to send samples of its HBM4E memory to key clients, with shipments expected by next month. This move is critical for the planned mass production of HBM4E next year, requiring client testing and optimization to be completed in the latter half of this year. AI
RANK_REASON The cluster contains multiple unrelated news items, including a stock market index reaching a record high and a tech hardware development, alongside mentions of AI concepts and companies without a central narrative.
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