General project: Manufacturing of mechanical and electrical equipment; Manufacturing of hydraulic power machinery and components; Mechanical parts and component processing; Manufacturing of metal processing machinery; General equipment manufacturing (excluding special equipment manufacturing); Specialized equipment manufacturing (excluding licensed specialized equipment manufacturing); Mechanical equipment leasing; Mining machinery manufacturing; Manufacturing of metal cutting and welding equipment; CNC machine tool manufacturing; Manufacturing of specialized equipment for petroleum drilling and production; Sales of hydraulic power machinery and components; Sales of mechanical equipment; Sales of mining machinery; Sales of specialized equipment for oil drilling and production; Manufacturing of general components; Manufacturing of specialized equipment for plastic processing; Sales of specialized equipment for plastic processing; Manufacturing of specialized equipment for rubber processing; Sales of specialized equipment for rubber processing; Sales of special equipment; Manufacturing of specialized machinery for the production of building materials; Sales of mechanical parts and components; Manufacturing of wood and bamboo processing machinery; Sales of wood and bamboo processing machinery; Sales of construction machinery; Manufacturing of construction machinery; Manufacturing of specialized textile equipment; Sales of specialized textile equipment; Sales of specialized machinery for agriculture, forestry, animal husbandry, animal husbandry, and fisheries; Installation and maintenance of specialized machinery for agriculture, forestry, animal husbandry, and fisheries; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, and fisheries; Manufacturing of agricultural, forestry, animal husbandry and fishery machinery accessories; Sales of agricultural, forestry, animal husbandry and fishery machinery accessories; Municipal facility management; Sales of electrical equipment; Import and export of goods.