No.39 Tianxin District Popularity Ranking Changsha Hunan No.4 Energy Saving Technology No.4 Energy Saving Devices No.4 Power Technology No.5 Power Facilities No.6 Integrated Energy Services No.7 Integrated Energy No.7 Energy Construction No.8 Thermal Power No.10 Gong Cheng An Apparel No.11 An Apparel Engineering No.11 Thermal Power Generation No.11 HVAC 高新技术企业 科技型中小企业 省级专精特新中小企业 专精特新小巨人企业 省级高新技术企业 省科技型中小企业