Guangzhou Huangpu District GuangdongNo.31 Power Systems DesignNo.37 Power DesignNo.44 Substations EngineeringNo.44 Power Engineering Design Power Grid Dian Li Gong Ying Power Household Appliances Power Distribution Gong Cheng Cheng Bag Substation Engineering Design省级专精特新中小企业市级专精特新中小企业省级高新技术企业省科技型中小企业省级创新型中小企业