Changsha Changsha County Hunan No.7 Switches No.11 Ce Kong No.14 Smart Grid No.16 Power Transmission and Distribution No.16 Photovoltaic Power Generation No.22 Appliances No.25 Equipment Manufacturing No.37 Power Equipment No.45 Household Appliances No.50 Optoelectronic No.53 Photovoltaic No.56 Power Distribution 企业技术中心 理事单位 国家技术创新示范企业 高新技术企业 国家企业技术中心 省级高新技术企业 省级专精特新中小企业 ISO9001认证