有色金属板块盘初下挫，精艺股份跌超7%

Group 1 - The non-ferrous metal sector experienced a decline at the beginning of trading, with significant drops in stock prices [1] - Jingyi Co., Ltd. (002295) fell over 7%, indicating a notable downturn in its market performance [1] - Other companies such as Northern Copper Industry (000737) and Feinan Resources (301500) also saw declines exceeding 5% [1] Group 2 - Tengyuan Cobalt Industry (301219), Huayu Mining (601020), and Huaxi Nonferrous Metals (600301) all faced downward pressure in their stock prices [1]