Hello, Secretary Dong, what stage has the company's sodium-ion battery research and development reached? Does the company have any cooperation or business dealings with domestic dye leaders in terms of positive electrode materials? Thank you

CATL: Hello investors, the company released a sodium-ion battery in 2021. The energy density of its battery cell is as high as 160Wh/kg. It can reach more than 80% of its capacity after charging for 15 minutes at room temperature. In a low-temperature environment of -20%℃, it also has a discharge retention rate of more than 90%, and the system integration efficiency can reach more than 80%. The company is committed to promoting the industrialization of sodium-ion batteries in 2023. Thank you for your attention.