光刻机概念股高开，波长光电接近20cm涨停

Group 1 - The semiconductor lithography machine concept stocks opened high, indicating positive market sentiment towards this sector [1] - Yongxin Optical Technology reached the daily limit increase, reflecting strong investor interest and confidence in the company [1] - Wavelength Optoelectronics approached a 20% limit increase, showcasing significant market movement and potential growth [1] Group 2 - Other companies such as Guolin Technology, Su Da Weige, Maolai Optics, Xinlai Materials, and Blue Eagle Equipment also experienced upward movement, indicating a broader trend in the lithography machine sector [1]