地面兵装板块2月4日涨0.6%，银河电子领涨，主力资金净流出7740.85万元

Market Overview - The ground armament sector increased by 0.6% compared to the previous trading day, with Galaxy Electronics leading the gains [1] - The Shanghai Composite Index closed at 4102.2, up by 0.85%, while the Shenzhen Component Index closed at 14156.27, up by 0.21% [1] Stock Performance - Galaxy Electronics (002519) closed at 8.44, with a rise of 2.55% and a trading volume of 1.5 million shares, amounting to a transaction value of 1.26 billion [1] - Other notable performers include: - GanHua Science and Technology (000576) at 10.77, up by 2.28% [1] - North Long Dragon (301357) at 131.13, up by 2.02% [1] - ST Emergency (300527) at 8.39, up by 0.72% [1] Capital Flow - The ground armament sector experienced a net outflow of 77.41 million from institutional investors, while retail investors saw a net inflow of 5.40 million [2] - The capital flow for key stocks includes: - Galaxy Electronics had a net inflow of 35.17 million from institutional investors [3] - North Long Dragon saw a net inflow of 14.05 million from institutional investors [3] - ST Emergency had a net inflow of 1.29 million from retail investors [3]