No.631 Beijing Popularity Ranking No.147 Chaoyang District No.1 Fire Protection Engineering No.2 3D Printing Materials No.5 Refrigeration No.7 Electrical Equipment No.9 Shipbuilding No.11 Power Equipment No.11 Industrial Control No.14 Gears No.14 Industrial Automation No.20 Ling Accessories No.23 Electromechanical No.30 Electromechanical Equipment 中关村高新技术企业 高新技术企业 瞪羚企业 知识产权试点企业 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 国家高新技术企业 专精特新小巨人企业