Wind turbine research and development, manufacturing, sales; New energy application technology development; Photovoltaic equipment and components, lighting lamps manufacturing, marketing; Electrical machinery and accessories, metal structure sales; Self-support and agency of import and export business of all kinds of commodities and technologies (except the commodities and technologies that are limited by the state or prohibited from import and export). (For projects subject to approval according to law, business activities can only be carried out after approval by relevant departments)