A-shares closing: The Sci Tech Innovation 50 Index opened low and rose 4.69%, PCB、 Collective strengthening of semiconductor industry chain According to Caixin News Agency, the market opened low and rose high, with the ChiNext Index and Shenzhen Component Index both rising by over 1%, and the Sci Tech Innovation 50 Index rising by over 4.5%. The transaction volume of the Shanghai and Shenzhen stock markets was 3.09 trillion yuan, an increase of 27.1 billion yuan from the previous trading day. On the market, over 3700 individual stocks fell. From the perspective of sectors, the PCB concept exploded, with more than ten constituent stocks hitting the daily limit up. Hongchang Electronics hit 5 boards in 7 days, Huazheng New Materials hit 3 consecutive boards, and Shennan Circuit hit the daily limit up, with stock prices reaching a historic high. The semiconductor industry chain has shown active performance, with storage chips and semiconductor equipment leading the way in gains. Shengmei Shanghai, Shannon Xinchuang, and Puran Co., Ltd. have reached a limit up of 20cm, while Yaxiang Integrated and Zhaoyi Innovation have reached a limit up of 20cm. The concept of glass substrate continues to be strong, with Qibin Group holding three consecutive boards and BOE A and Rainbow Shares hitting the daily limit up. The concept of supercapacitors fluctuated and rose during the trading session, with Haixing Stock holding three consecutive boards, while Aihua Group and Tongfeng Electronics hit the limit up.