Tianjin Hexi DistrictNo.24 Energy Saving TechnologyNo.32 Energy ManagementNo.35 Energy OperationsNo.36 Heating SupplyNo.43 RefrigerationNo.74 Clean EnergyNo.76 Water TreatmentNo.80 Renewable Energy Ecological Construction Di Re Neng Energy Saving Services Heating Supply Energy Saving院士工作站市级高新技术企业高新技术企业科技型中小企业市科技型中小企业省级高新技术企业