光刻机概念再度活跃，永新光学3连板

Core Viewpoint - The photolithography machine concept stocks have shown significant strength in trading, with several companies reaching new highs, indicating a strong market interest in this sector [1] Group 1: Stock Performance - Guanghua Optoelectronics has reached a 20% limit up, continuing to set new highs [1] - Tengjing Technology has increased by approximately 14%, also achieving a new high [1] - Other companies such as Kaimete Gas, Yongxin Optics, and Haili Co. have hit the limit up [1] - Maolai Optics has risen by about 8%, nearing the historical high of 500 yuan [1] - Yongxin Optics has experienced three consecutive trading days of limit up [1] Group 2: Company Specifics - Yongxin Optics has stated that it has not found any media reports that significantly impact its stock trading price [1] - The company acknowledges that it has been associated with the semiconductor and photolithography machine concepts by some media [1] - Yongxin Optics primarily focuses on optical microscopes and optical components, with no significant changes in its business model [1] - The revenue contribution from photolithography-related optical components is less than 1%, indicating it is not a core business for the company [1] - The company advises investors to be cautious of speculative trading related to hot concepts and to be aware of investment risks [1]