General project: Import and export of technology; Import and export of goods; Sales of construction machinery; Sales of agricultural machinery; Sales of specialized machinery for agriculture, forestry, animal husbandry, animal husbandry, and fisheries; Sales of mechanical equipment; Sales of mining machinery; Mechanical equipment research and development; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Sales of intelligent agricultural machinery and equipment; Import and export agency; Domestic trade agency; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, and fisheries; Agricultural machinery manufacturing; Mining machinery manufacturing; Manufacturing of construction machinery; Specialized equipment repair; Installation services for ordinary mechanical equipment; Installation and maintenance of specialized machinery for agriculture, forestry, animal husbandry, and fisheries. (Except for the projects that need to be approved according to law, they can independently carry out business activities according to law with their business licenses) The specific business projects shall be subject to the approval documents or licenses issued by the relevant departments.