7月21日连板股分析：全市场逾百股涨停 大基建板块全线爆发

Group 1 - The core viewpoint of the articles highlights a significant surge in the infrastructure sector, with over 121 stocks hitting the daily limit up, indicating strong market performance [1] - The overall market saw more than 4,000 stocks rise, with over 100 stocks reaching the limit up, showcasing broad market enthusiasm [1] - The number of consecutive limit-up stocks was 12, with a promotion rate of 46.15% for stocks that advanced to three consecutive limit-ups or more, excluding ST and delisted stocks [1][2] Group 2 - The infrastructure sector experienced a comprehensive breakout, with over 70 stocks in sub-sectors like cement, engineering construction, and machinery hitting the limit up [1] - Specific stocks such as Lan Sheng Co., Hai Xing Co., and Yan Hua Intelligent faced negative feedback and broke their limit-up streaks, indicating some volatility in the market [1] - Robot concept stocks also performed well, driven by news of Yushu Technology starting its listing guidance, with companies like Jinfa Technology and Xuelong Group reaching the limit up [1]