Engaging in investment activities with自有 funds; research and development of mechanical equipment; sales of mechanical equipment; manufacturing of general equipment (excluding special equipment); manufacturing of specialized equipment (excluding licensed specialized equipment); manufacturing of construction machinery; sales of construction machinery; leasing of construction machinery and equipment; manufacturing of agricultural machinery; sales of agricultural machinery; leasing of agricultural machinery; agricultural machinery services; manufacturing of electric motors; manufacturing of specialized electrical machinery; sales of electrical materials; manufacturing of gas compression machinery; sales of gas compression machinery; sales of food (pre-packaged food only); internet sales of food (pre-packaged food only); import and export of goods; low-temperature storage (excluding items requiring permits such as hazardous chemicals); loading and unloading; technical services, technical development, technical consulting, technical exchange, technology transfer, technology promotion; leasing of non-residential real estate; leasing of residential housing. Permitted items: road motor vehicle production; livestock slaughter; food production; food sales; internet food sales.