地面兵装板块1月29日跌1.56%，甘化科工领跌，主力资金净流出4.01亿元

Market Overview - The ground equipment sector experienced a decline of 1.56% on January 29, with GanHua Science and Technology leading the drop [1] - The Shanghai Composite Index closed at 4157.98, up 0.16%, while the Shenzhen Component Index closed at 14300.08, down 0.3% [1] Stock Performance - Key stocks in the ground equipment sector showed the following closing prices and percentage changes: - MuHua Science and Technology: 10.84, down 3.99% [1] - GuoKe Military Industry: 68.00, down 2.80% [1] - Optoelectronic Co.: 17.99, down 2.55% [1] - BeiFang ChangLong: 132.31, down 2.43% [1] - JieQiang Equipment: 41.67, down 2.09% [1] - Great Wall Military Industry: 45.36, down 1.86% [1] - Inner Mongolia First Machinery: 17.10, down 1.61% [1] - TianZou Equipment: 22.91, down 1.42% [1] - BeiFang Navigation: 16.85, down 1.23% [1] - ZhongBing HongJian: 19.58, down 0.96% [1] Capital Flow - The ground equipment sector saw a net outflow of 401 million yuan from institutional investors, while retail investors contributed a net inflow of 400 million yuan [1] - The following stocks had notable capital flows: - Galaxy Electronics: Institutional net outflow of 30.48 million yuan [2] - ST Emergency: Institutional net outflow of 3.32 million yuan [2] - JieQiang Equipment: Institutional net outflow of 4.09 million yuan [2] - TianQin Equipment: Institutional net outflow of 7.25 million yuan [2] - GanHua Science and Technology: Institutional net outflow of 12.65 million yuan [2] - BeiFang ChangLong: Institutional net outflow of 17.26 million yuan [2] - Optoelectronic Co.: Institutional net outflow of 26.91 million yuan [2] - GuoKe Military Industry: Institutional net outflow of 39.07 million yuan [2] - ZhongBing HongJian: Institutional net outflow of 52.12 million yuan [2] - BeiFang Navigation: Institutional net outflow of 85.29 million yuan [2]