Beijing Mobile Communications Co., Ltd. is a wholly-owned and indirect wholly foreign-owned enterprise owned by China Mobile (Hong Kong) Co., Ltd., mainly engaged in mobile phone communication services (including voice, data, multimedia, etc. ), IP telephone and Internet access services and related communication value-added services. Beijing Mobile Communication Co., Ltd. has established a market-oriented marketing system and after-sales service system according to the characteristics of Beijing mobile communication market and the needs of customers while rapidly improving its network capabilities. At present, GSM, M-Zone and Shenzhouxing have become well-known brands.