General project: sales of graphite and carbon products; Sales of petroleum products (excluding hazardous chemicals); Sales of office supplies; Sales of office equipment consumables; Sales of plastic products; Sales of new energy driven equipment; Sales of photovoltaic equipment and components; Sales of solar thermal utilization products; Retail of hardware products; Sales of electronic components and electromechanical component equipment; Sales of paper products; Sales of building materials; Sales of chemical products (excluding licensed chemical products); Sales of building waterproofing membrane products; Manufacturing of office equipment consumables; Import and export of goods. (Except for projects that require approval according to law, business activities shall be conducted independently based on the business license in accordance with the law)