Beijing Certificate Authority stated on the interactive platform that based on the HarmonyOS NEXT system, the company has developed a native application for the "Pocket Handy Book" app. The "Pocket Handy Book" app has been released on the HarmonyOS NEXT application market, realizing the application needs such as applying for and signing digital certificates for users. By leveraging the security protection capabilities of the Hongmeng native system, it helps users to provide secure support for electronic document signing and electronic seal applications for dozens of industries such as medical, education, government-enterprise cooperation, finance, etc., under a secure and reliable digital certificate authentication system, empowering digital transformation.