On December 31, 2021, the company's R&D department applied for a patent and reported that "a complementary power supply device based on solar and wind power generation" was granted a national utility model patent. This patent is another major achievement of our company in the field of wind and solar complementary industry. Since our company began to develop the wind and solar complementary industry in 2018, we have obtained multiple technical patents and software copyrights, This patent has laid a solid foundation for the company to further expand its application in the wind and solar complementary industry in the future. Based on the concept of combining research and application, our company will soon apply this patented technology to market promotion and project delivery, transforming the patent into benefits and creating value for customers.