有色金属板块持续走弱，精艺股份跌停

Group 1 - The non-ferrous metal sector continues to weaken, with significant declines in stock prices [1] - Precision Instrument Co., Ltd. (002295) hit the daily limit down [1] - Northern Copper Industry (000737) fell over 7% [1] Group 2 - Guangsheng Nonferrous Metals (600259) and Feinan Resources (301500) both dropped over 5% [1] - Tengyuan Cobalt Industry (301219) and Tibet Mining (000762) also experienced declines [1]