No.309 Changsha County Popularity Ranking Changsha Hunan No.1 Dian Zi Xi Tong Ji Cheng No.4 Laboratory Instruments Equipment No.4 Zhi Neng Wei Dian Nets No.5 Dian Kong No.10 Appliances No.17 Power Equipment No.17 Household Appliances No.17 Smart Hardware No.19 Power Distribution No.21 Automation Production No.21 Power Supplies No.25 System Integration 专精特新小巨人企业 高新技术企业 省级高新技术企业 科技型中小企业 省科技型中小企业 ISO9001认证 ISO14001认证 OHSAS18001认证 GJB9001B