What level of unit is China Unicom?

China Hao Tong is a central enterprise-level unit. China Railway Communication Signal Group Co., Ltd., referred to as China Hao Tong for short, is a large central enterprise directly supervised by the State-owned Assets Supervision and Administration Commission of the State Council. China Railway Communication Signal Group Co., Ltd. has a complete industrial chain of railway and urban rail transit communication signal system integration, R&D design, equipment manufacturing, construction and operation and maintenance; It is the compilation unit of China railway communication signal system standards and specifications. Central enterprises, also known as enterprises directly under the central government and enterprises under central management, refer to state-owned enterprises represented by the State Council in People's Republic of China (PRC) and the State Council (the central people's government) or their authorized institutions such as the Ministry of Finance and the State-owned Assets Supervision and Administration Commission of the State Council.