Rukun New Materials' performance and customer concentration

In 2020, 2021 and 2022, Rukun New Materials' revenue was RMB 416 million, RMB 672 million and RMB 814 million respectively, and its net profit was RMB 74.901 million, RMB 94.6107 million and RMB 97.6559 million respectively, and its net profit after deducting non-recurring items was RMB 60.6747 million, RMB 137 million and RMB 100 million respectively. In terms of customers, from 2020 to 2022, the revenue from the top five customers of the company's new materials business accounted for 88.86%, 88.84% and 88.43% respectively, with a high customer concentration.