北证50日内跌超2%

Group 1 - The North Exchange 50 index has experienced a decline of 2.02% over the past 50 days [1] - Among the constituent stocks, Silane Technology has dropped by 7.98% [1] - Other notable declines include Kete Co., which fell by 6.51%, China National Offshore Oil Corporation down by 6.50%, and Hualing Co. decreasing by 6.47% [1]