1. State Grid Tianjin Electric Power Company,Marketing Department,Tianjin,China
2. State Grid Tianjin Electric Power Company,Marketing Service Center (Measurement Center),Tianjin,China
3. Tianjin Renewable Energy Co., LTD of China Energy Engineering Group Co., LTD China Power Engineering Consulting Group Co., LTD,Tianjin,China
4. Tianjin Transmission and Transformation Engineering Co., LTD.,State Grid Tianjin Electric Power Company,Tianjin,China