The general business projects are: Research and development of metal products; Sales of metal products; Sales of plastic products; Plastic surface treatment; Sales of needle textiles; Sales of electronic products; Sales of mechanical equipment; Packaging services; Professional design services; Manufacturing of electronic specialized equipment; Sales of chemical products (excluding licensed chemical products); Information technology consulting services; Sales of daily necessities; Internet sales (except for the sale of goods that need to be licensed); Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion. (Except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law), the licensed business projects are: Import and export of goods; Food sales; Internet sales of food; Technology import and export. (For projects that require approval according to law, business activities can only be carried out after approval by relevant departments. The specific business projects shall be subject to the approval documents or permits issued by relevant departments. )