No.418 Beijing Popularity Ranking No.130 Haidian District No.1 Environmental Equipment No.1 Hoisting Equipment No.1 Frequency Converters No.1 Inverters No.2 Diao Yun Machines No.2 Dian Qi Chuan Dong No.2 Machines Vehicles No.2 Cranes No.2 Transmission Systems No.3 Gao Duan Equipment Manufacturing No.3 Energy Equipment No.3 Equipment Manufacturing 省级创新型企业 国家专利 知识产权优势企业 国家高新技术企业 高新技术企业 国家企业技术中心