General projects: Technical services, technology development, technology consultation, technology exchange, technology transfer, technology promotion; Luggage sales; Sales of electronic products; Paper product sales; Gas, liquid separation and purification equipment sales; Sales of special equipment for environmental protection; Sales of household appliances; Research and development of household appliances; Daily household appliance retail; Mold sales; Indoor air pollution control; Home appliances parts sales; Refrigeration, air conditioning equipment sales; Special equipment sales; Air pollution control; New material technology research and development; New material technology extension service; Machinery and equipment sales; Sales of machinery parts and spare parts; Gas compression machinery sales; Sales of metal products; Air pollution monitoring and testing instruments sales; Sales of greenhouse gas emission control equipment; Environmental advisory services; Education consulting services (excluding education and training activities related to license examination and approval); Information technology consulting services; Enterprise management consulting; Information consulting services (excluding licensed information consulting services); Import and export of goods; Technology import and export; Hardware products retail; Rubber products sales. (Except for projects subject to approval according to law, independently carry out business activities according to law with the business license)