Technology development, technical service, technology transfer, sales of chemical products, metal materialsMaterials, communication equipment, textiles, computers, software and auxiliary equipment, 5Jinjiao electricity, machinery and equipment, electrical products, daily necessities, office supplies, automobilesSpare parts, motorcycle parts, cosmetics; Computer system services; societyEconomic consulting (except investment consulting); Professional design services; Goods in and outPort, technology import and export, import and export agent. Market entities make their own choices in accordance with the lawOperating projects and carrying out business activities; Items subject to approval in accordance with the law, by relevantAfter the approval of the department, business activities shall be carried out in accordance with the approved contents, and shall not be engaged in the state andThe City's industrial policy prohibits and restricts the business activities of such projects.)