A股光刻机概念股走强，同益股份、凯美特气涨停

Core Viewpoint - The A-share market is experiencing a strong performance in the photolithography machine concept stocks, with notable gains in several companies [1] Company Performance - Tongyi Co., Ltd. reached a 20% limit up in stock price [1] - KMTQ Co., Ltd. saw a 10% increase in stock price [1] - Other companies such as Northern Huachuang, Chipsource Micro, New Lai Materials, and Jinsai Technology also experienced upward movement in their stock prices [1]