No.199 Dongcheng District Popularity Ranking Beijing No.2 Security Monitors Materials No.4 Forestry No.5 Zhi Bao No.5 Data Center Construction No.5 Zhi Neng Jian Testing No.8 Zhi Hui Systems No.9 Video Security Surveillance No.9 Video Surveillance Systems No.10 Smart Perception No.11 Video Surveillance No.14 Hong Wai Technology No.14 Communication Equipment 高新技术企业 科技型中小企业 中关村高新技术企业 省级高新技术企业 市科技型中小企业 国家高新技术企业