China Mobile Communications Group Hunan Co., Ltd., as the only operator focusing on the development of mobile communication in Hunan Province, is mainly responsible for the construction and operation management of mobile communication network in Hunan Province, and operates mobile voice, data, IP telephone and multimedia services. Besides providing basic voice services, it also provides various voice value-added services and wireless data services. At present, the company has three major customer brands: GSM, Shenzhouxing and M-Zone.