Sunpower Group Ltd. is an investment holding company, which engages in the design, manufacture, and research and development of customized energy saving and environmental protection products and solutions. It operates through the Manufacturing and Services (M&S) and Green Investments (GI) segments. The M&S segment offers heat exchangers and pressure vessels, heat pipes and heat pipe exchangers, pipeline energy saving products, and related environmental protection products. The GI segment focuses on the investment, development, and operation of centralized heat, steam, and electricity generation plants. The company was founded by Hong Xin Guo and Ming Ma in 1997 and is headquartered in Nanjing, China.