Tyre sales machinery and equipment, daily necessities, chemicals (excluding dangerous chemicals), metal materials, hardware and electrical, materials of construction; Import and export of goods; Import and export agent; Import and export of technology; Technology extension services. (Enterprises independently select business projects and carry out business activities in accordance with the law; Projects subject to approval according to law, approved by the relevant departments in accordance with the approved content to carry out business activities; They shall not engage in the business activities of the projects prohibited and restricted by the industrial policies of this Municipality.