Changsha Changsha County Hunan No.13 Industrial Safety No.21 Surveillance Systems No.22 Smart Control No.27 Tai Yang Neng Fa Dian No.29 Power Generation Equipment No.31 Photovoltaic Power Generation No.39 Hydropower No.43 Drainage Systems No.43 Solar Energy No.45 Wind Power No.45 Water Treatment Engineering No.46 Shui Chu Li Wei Hu 高新技术企业 科技型中小企业 省级高新技术企业 省科技型中小企业 省级专精特新中小企业 发明专利 ISO9001认证 3C认证 CE认证