[Semiconductor materials sector fluctuated and strengthened, Youyan Silicon rose more than 10%] On September 16th, the semiconductor materials sector fluctuated and strengthened during the session, and Youyan Silicon rose more than 10%. Previously, Zhongjing Technology had two consecutive boards, Tianyue Advanced, Shanghai Hejing, Youyan New Materials, Leading Base, and Shengong Shares followed suit. On the news, CITIC Securities predicts that heavy-doped silicon wafers, which are in relatively short supply, are expected to continue to rise in the second half of the year, and relevant companies may increase next year's long-term contract prices from September to October. This means that the price increase cycle will continue until at least 2027.