No.827 Beijing Popularity Ranking No.253 Haidian District No.2 Wei Zhi Services No.2 Ride-hailing Vehicles No.2 Aerial Photography No.3 Vehicle-mounted Terminals No.3 Zhi Hui Chu Firm No.3 Hang Dian Systems No.4 Gong Xiang Chu Firm No.5 Smart Voice No.5 Enterprise Applications No.5 Shu Zi Cheng Shi No.6 Meteorology Services No.7 Meteorology Taoist Temples Testing 副会长单位 理事单位 高新技术企业 国家知识产权优势企业 中关村高新技术企业 省级高新技术企业