Hazardous chemicals business (business activities are carried out according to the scope and time limit approved by the hazardous chemicals business license); import and export of goods and technology; research and development and application of comprehensive utilization technology of waste resources; research and development of energy-saving and emission reduction technology; development of new energy technology; building materials, decorative materials, furniture, Wujijiaodian, Sales of metal materials, general mechanical equipment and accessories, auto parts, motorcycle parts, electronic products, communication equipment (excluding mobile communication terminal equipment), department stores, arts and crafts (except ivory and its products), and agricultural and sideline products; the following scope is limited to branch operations: production and processing of fluoride salt series products