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21. Shuaifeng Electric Appliances: There may be the risk of irrational speculation and the risk of a large short-term increase in the stock price and subsequent decline.18. 3 Lianban Huifa Food: Shareholder Zhenghechang's plan to reduce the holding of 1 million shares on December 11th has not been completed.4. Jingchen Co., Ltd.: The machine vision intelligent chip under research is in the trial production stage.

1. Individual pension funds will be expanded to broad-based index products.5. Today, A shares shrank by 17,000 yuan. What is the reason why Xiaoyang rose by 9 points?Second, good news affecting listed companies

7. nanshan aluminum: It is planned to buy back the shares for RMB 300 million to RMB 600 million and use them for cancellation.16, 6 Lianban Shandong Glass Fiber: The company's stock may have the risk of falling sharply in the short term.Third, bad news affecting listed companies