超硬材料概念震荡走高 宇晶股份涨停

Group 1 - The superhard materials sector experienced a significant upward movement on January 22, with notable stocks such as Yujing Co. and Boyun New Materials hitting the daily limit up [2] - Other companies in the sector, including World and Sifangda, also saw increases in their stock prices, indicating a broader positive trend within the industry [2]