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[Memory chip concept is active, Dagang shares are at daily limit] On October 23, the memory chip concept was active, Dagang shares were at daily limit, and Puran shares, Demingli, and Changxin Technology followed suit. According to news, Samsung Electronics and SK Hynix are promoting the production of more than 200 layers of NAND wafers in their Chinese factories, upgrading Chinese factory technology to the level of Korean factories. Samsung's factory in Xi'an currently accounts for about 40% of the company's global NAND production, and the company aims to currently produce about 200 layers of NAND wafers.
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