No.335 Yizhuang Development Zone Popularity Ranking Beijing No.3 Security Surveillance Systems No.3 Smart Engineering Land No.5 Smart Security No.6 Security Systems No.12 Smart Construction No.12 AR Technology No.25 Construction Intelligence Chemical No.26 VR Xu Ni Chang Jing No.27 Security Electronics No.27 Telecom No.32 An Fang Wei Hu No.42 Ji Suan Ji Shi Jue 省级专精特新中小企业 市级专精特新中小企业 高新技术企业 省级高新技术企业 市级高新技术企业 市级创新型中小企业