According to Daihatsu official website's inquiry, Daihatsu's contract is safe. Fafa is the leading cloud service platform for electronic contract and electronic signing in China. Based on legal digital signature technology, Fafa is committed to providing online collaborative signing and management of electronic contracts and electronic documents for enterprises, governments and individuals. Before signing a contract with this method, users need to authenticate their real names to ensure the authenticity and reliability of the signing process. Developed countries have also obtained relevant qualifications and certifications such as Internet information services, which proves that they have certain credit and security. At the same time, this method encrypts sensitive data greatly, adopts blockchain distributed existence, saves up to 9 copies, and adopts the system of "two activities in the same city and disaster tolerance in different places". At the same time, it can resist all kinds of network attacks. The best proof of its security is that it has passed the ISO2700 1 security certification and obtained the "trusted cloud" enterprise-level SaaS certification.