In response to investors, Aerospace Information (600271.SH) stated that Aerospace Information constructed the Tianjin vaccine traceability supervision platform, applied big data and new blockchain technology, and served the public, manufacturing enterprises and regulatory authorities. It was the first implementation in the country. The provincial vaccine retrospective supervision platform, which is required by the new vaccine law and complies with the new standards, is connected to the National Drug Administration and the Health and Health Commission system and connects to the national platform. The company's follow-up operating model will be implemented in accordance with the guidance of relevant government departments. The system is currently under construction and pilot.