Group 1 - The company has invested in several outstanding enterprises in the photoresist field, holding a 3.6705% stake in Beijing Kehua Microelectronics Materials Co., Ltd. and a 1.3853% stake in Beijing Dingcai Technology Co., Ltd. [1] - Beijing Kehua is a leading enterprise in the domestic semiconductor photoresist sector, while Beijing Dingcai is recognized for its OLED luminescent materials and panel display photoresists. [1]