CJ/T 331-2016 in English

This standard outlines the technical specifications for a universal interoperability card used in urban public utilities. It provides detailed requirements for the design, functionality, and performance of such cards, ensuring compatibility across different systems and services. The document covers aspects such as data transmission protocols, security measures, and operational standards to facilitate seamless integration within urban infrastructure. It also includes guidelines for testing and certification processes to maintain consistent quality and reliability. The standard aims to support the efficient operation of public utility services by establishing a common framework for card-based interactions.