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Beijing Chaoyang DistrictNo.1 Communication Network OptimizationNo.3 Communication TechnologyNo.4 Network OptimizationNo.13 Communication ServicesNo.15 Yi Dong Wu Lines CommunicationNo.17 Wu Xian Dian CommunicationNo.29 Communication Systems Communication Technology Wang Luo Gui Hua Communication Technology Services Solar Energy 3G Yi Yi Chun An MEA高新技术企业中关村高新技术企业省级高新技术企业市级创新型中小企业