地面兵装板块1月20日跌2.96%，捷强装备领跌，主力资金净流出10.01亿元

Market Overview - The ground armament sector experienced a decline of 2.96% on January 20, with Jieqiang Equipment leading the drop [1] - The Shanghai Composite Index closed at 4113.65, down 0.01%, while the Shenzhen Component Index closed at 14155.63, down 0.97% [1] Individual Stock Performance - Jieqiang Equipment (300875) closed at 40.18, down 4.90% with a trading volume of 45,600 shares and a transaction value of 186 million [1] - Galaxy Electronics (002519) closed at 7.95, down 4.79% with a trading volume of 2,294,100 shares [1] - Inner Mongolia First Machinery (600967) closed at 18.24, down 4.45% with a trading volume of 569,700 shares [1] - Guoliao Shigong (688543) closed at 68.90, down 3.85% with a trading volume of 107,200 shares [1] - Northern Long Dragon (301357) closed at 136.94, down 3.66% with a trading volume of 26,200 shares [1] Capital Flow Analysis - The ground armament sector saw a net outflow of 1 billion from institutional investors, while retail investors contributed a net inflow of 880 million [1] - The detailed capital flow for individual stocks indicates varying levels of institutional and retail investor activity [2] - For instance, Northern Long Dragon (301357) had a significant net outflow of 81.07 million from institutional investors, while retail investors contributed a net inflow of 71.66 million [2]