Group 1 - The company, Tongyi Co., focuses on the materials sector and provides specialized flame-retardant PC and ABS materials for the lithium battery industry [2] - The company's products aim to enhance the safety performance of downstream products [2]

Group 1 - The company is actively engaged in the materials sector and provides specialized flame-retardant PC and ABS materials for the lithium battery industry [1] - The company's products aim to enhance the safety performance of downstream products in the lithium battery field [1]