General project: Research and development of new material technology; Technical services, development, consultation, exchange, transfer, and promotion; Sales of electric bicycles; Bicycle manufacturing; Retail of bicycles and spare parts; Wholesale of bicycles and spare parts; Sales of electronic products; Manufacturing of wearable intelligent devices; Sales of wearable intelligent devices; Battery manufacturing; Battery sales; Sales of battery spare parts; Sales of solar thermal utilization products; Sales of solar thermal power generation equipment; Sales of solar thermal utilization equipment; Sales of solar thermal power generation products; Sales of daily masks (non medical); Retail of protective equipment for medical staff; Sales of labor protection equipment; Sales of mother and baby products; Sales of personal hygiene products; Sales of daily necessities; Sales of Class I medical devices; Domestic trade agency; Internet sales (excluding sales of goods that require licensing); Import and export of goods; Technology import and export. (Except for projects that require approval in accordance with the law, business activities shall be carried out independently with the business license in accordance with the law)