光刻胶概念走强，彤程新材涨停

Core Viewpoint - The A-share market saw a significant rise in photolithography resin concept stocks, with several companies hitting their daily price limits and experiencing substantial gains in their stock prices [1]. Group 1: Stock Performance - Qicai Chemical (300758) reached a 20% increase, with a total market value of 8.21 billion and a year-to-date increase of 59.34% [2]. - Sudavige (300331) rose by 12.8%, with a market capitalization of 11.7 billion and a year-to-date increase of 39.40% [2]. - Tongcheng New Materials (603650) increased by 10%, with a market value of 36.9 billion and a year-to-date increase of 35.84% [2]. - Baidao Chemical (603360) saw an 8.29% rise, with a market capitalization of 22.7 billion and a slight year-to-date decrease of 0.28% [2]. - Shanghai Xinyang (300236) increased by 7.97%, with a market value of 25.7 billion and a year-to-date increase of 28.53% [2]. - Nanda Optoelectronics (300346) rose by 7.78%, with a market capitalization of 42.4 billion and a year-to-date increase of 43.12% [2]. - Dongcai Technology (601208) increased by 7.32%, with a market value of 28.5 billion and a year-to-date increase of 3.77% [2]. - Guofeng New Materials (000859) rose by 5.74%, with a market capitalization of 11.7 billion and a year-to-date increase of 29.35% [2]. - Feikai Materials (300398) increased by 5.43%, with a market value of 14.6 billion and a year-to-date increase of 15.22% [2]. - Jiaxian Co., Ltd. (920489) rose by 5.21%, with a market capitalization of 2.81 billion and a year-to-date increase of 14.44% [2].