General items: manufacturing of special equipment for plastic processing; Cork products sales; Sales of special chemical products (excluding hazardous chemicals); Sales of plastic products; Import and export of goods; Sales of special equipment for plastic processing; Sales of synthetic materials; Manufacturing of synthetic materials (excluding hazardous chemicals); Packaging services; Information consulting services (excluding licensing information consulting services); Furniture installation and maintenance services; Engineering management services; Technical service, technology development, technology consultation, technology exchange, technology transfer, and technology promotion (except for projects that need to be approved according to law, business activities shall be carried out independently according to law with the business license).