China Unicom has been promoting the development of reconfigurable intelligent of surface (RIS) requirement, scenarios, technology innovation, system development, test, standardization and ecological construction. China Unicom has developed RIS 3.5G and MMwave prototype system and simulation platform since 2020. And technologies, such as RIS channel model establision, channel estimation and beamforming are studied and tested. China Unicom cooperated with parters to establish RIS techonology alliance (RISTA) in April 2022. We participate actively in IMT-2030 RIS Group for technology reseach and discussion and test verification. And we also promote standarization of RIS and related technologies in CCSA and 3GPP. In the future, China Unicom will continue to promote RIS basical research,standarization and industrial application to enhance the transformation of original technology. And we decide to create a good ecological environment
conducive to the development of original technology and make our contribution for prosperous digital economy.