General items: Sales of chemical products (excluding licensed chemical products); Disinfectant sales (without hazardous chemicals); Environmental advisory services; Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination; Water pollution control; Water pollution prevention and control services; Hardware products retail; Hardware products wholesale; Sales of plastic products; Machinery and equipment sales; Import and export of goods. (Except for projects subject to approval according to law, independently carry out business activities according to law with business licenses)