Beijing Chaoyang DistrictNo.11 Di Xia EngineeringNo.14 PPP Xiang MuNo.14 Cheng Shi Zong He Guan LangNo.17 Tu Shi Fang EngineeringNo.21 Tunneling EngineeringNo.57 Gong Road EngineeringNo.71 Transportation EngineeringNo.84 Ji Chu Facilities ConstructionNo.98 Shui Li Shui Dian Energy Storage Road and Bridge Jian Zhu Shi Engineering高新技术企业省级高新技术企业