No.142 Xicheng District Popularity Ranking Beijing No.2 Communication Products No.4 Wai Hu No.9 Communication Services No.11 Zeng Zhi Services No.23 Telecom No.23 Information Safety Management No.31 Communication No.32 Communication Engineering No.75 Safety Management No.99 Gong Gong Safety Information Safety Guo Nei E-commerce 双软认证 瞪羚企业 中关村高新技术企业 省级高新技术企业 市级高新技术企业 科技型中小企业 市科技型中小企业 高新技术企业 国家高新技术企业 专精特新企业 ISO9001认证 ISO14001认证 ISO27001认证