General items: Manufacturing of electronic components; Manufacturing of electronic components and electromechanical components; Sales of power electronic components; Sales of electronic components and electromechanical components; Import and export of goods; Technology import and export; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Engineering and technical research and test development; Business management; Housing lease; Non residential real estate leasing. (Except for projects that need to be approved according to law, business activities shall be carried out independently according to law with the business license)