China Tower is the world's largest telecommunications tower infrastructure service provider, and the Company always adheres to the philosophy of shared development and implements the "One Core and Two Wings" strategy. The Company is principally engaged in the construction, maintenance and operation of base station ancillary facilities such as telecommunications towers, public network coverage in high-speed railways and subways, and large-scale indoor Distributed Antenna Systems (DAS). Meanwhile, relying on unique resources to provide energy application services such as information application and intelligent battery exchange and power backup to the society, the Company strives to build itself into a world-class integrated information and communications infrastructure service provider and a highly competitive information and new energy applications provider. As of the end of December 2021, the Company's total assets amounted to RMB323,259 million. China Tower operated and managed 2.038 million tower sites across 31 provinces, municipalities and autonomous regions in the PRC, and served over 3.459 million tenants with the tenancy ratio of 1.70, showing a continuous increase in the level of site co-location.