How is the company’s R&D investment in 2021?

Desay SV replied: Maintaining a high level of R&D investment is the company's consistent business strategy and the main reason for the company to maintain its technological leadership. In the context of industry changes, firm R&D investment is even more indispensable. In 2021, the company's R&D investment was nearly 1 billion yuan, accounting for about 10% of sales. It also has R&D branches in Singapore, Weimar, Germany, Nanjing, Chengdu, Shanghai, Shenzhen, Shanghai and other places in China.