No.154 Changsha Popularity Ranking No.66 Changsha County No.222 Hunan No.1 Geographic Information No.3 BeiDou Navigation No.3 Systems Engineering No.3 Boards Cards No.4 Electronics Engineering No.5 Wei Electronics No.5 Satellites Navigation Systems No.5 BeiDou Applications No.5 Satellites Navigation No.6 System Integration No.7 Navigation No.7 Processing Devices Chips 企业技术中心 省级工程技术研究中心 国家高新技术企业 专精特新小巨人企业 高新技术企业 科技型中小企业