Construction; Software development and technical services; Design of Intelligent Network Systems、 Construction and maintenance; Installation of communication equipment、 Leasing and sales; Construction equipment and machinery rental;Labor Services; For the catering industry、 Education、 Business、 Information Industry、 tourism、 cultural industries、 Aquaculture、 Investment in the livestock industry; Industrial Investment; Investment Consulting; Freight operations; Sale: sand and gravel, cement, steel, Building Materials, Decorative materials, Metal materials, waterproof materials, Plastic raw materials and products, New energy equipment, Mechanical equipment, Environmental protection equipment, Water pump valve, Fluid control equipment and accessories, office equipment, teaching equipment, Chemical products( Except for hazardous chemicals), Electronics,digital products, Instruments, Hardware and Electrical; Import and export of goods or technology( Except for the import and export of goods and technologies that are prohibited by the state or involve administrative approval)。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)