ShengChao TechFlow News: On March 19, the Shanghai Composite Index dropped 1.55% intraday, falling below 4,000 points; sectors such as precious metals, energy metals, chemicals, rare earth permanent magnets, steel, and chemical fibers led the declines, while oil, natural gas, and electricity sectors defied the trend and gained; approximately 500 stocks rose across the market, while 4,900 stocks declined. (Jinshi)