Biotechnology research and development, technology transfer, technical services; self-operated and agent import and export business of various commodities and technologies (except for commodities and technologies that are restricted by the state or prohibited from import and export); chemical raw materials (chemical dangerous goods and special approval Sales of chemical products (except hazardous chemicals), electronic products, stationery, sporting goods and equipment. (Projects that are subject to approval in accordance with the law can be operated only after being approved by relevant departments)