On January 15, 2026, stocks related to the photoresist concept within the A-share market experienced a significant collective rally. Colorchem's share price soared to its daily upper price limit, marking a remarkable 20% increase (the term "20CM" is a colloquial expression in the Chinese stock market, indicating a 20% daily price limit rise). Suda Weige's shares also performed strongly, climbing by more than 12%. Tongcheng New Materials achieved its 10% daily upper price limit, while Baiao Chemical's shares rose by over 8%. Furthermore, Shanghai Xinyang, Nata Optoelectronic, and Dongcai Technology all witnessed their share prices increase by more than 7%. Guofeng New Materials, Feikai Materials, and Jiaxian Co., Ltd. also saw their share prices climb by over 5%.
