Manufacturing of domestic waste treatment equipment; manufacturing of special equipment for environmental protection; manufacturing of intelligent unmanned aerial vehicles; manufacturing of special equipment for traffic safety and control; manufacturing of metal cutting and welding equipment; processing of mechanical parts and components; manufacturing of instruments and meters; research and development of mechanical equipment; production of labor protection supplies; manufacturing of specialized machinery for agriculture, forestry, animal husbandry, and fishery; manufacturing of special equipment (excluding manufacturing of licensed professional equipment); production of chemical products (excluding licensed specialized equipment) Industrial products); sales of household waste treatment equipment; sales of special equipment for environmental protection; sales of environmental emergency technical equipment; sales of automobiles; sales of mechanical equipment; sales of mechanical parts and components; sales of electrical equipment; sales of high-performance sealing materials; sales of instruments and meters; sales of fire-fighting equipment; sales of mining machinery; sales of traffic and public management signs; sales of charging piles; operation of electric vehicle charging infrastructure; wholesale of motorcycles and spare parts ;Sales of gifts and flowers; business of crop seeds (only for packaged seeds that are no longer repackaged); sales of fertilizers; wholesale of hardware products; sales of lamps; sales of office supplies; sales of labor protection supplies; wholesale of kitchen utensils, sanitary ware and daily sundries; sales of special electronic equipment; sales of experimental analytical instruments; sales of professional machinery for agriculture, forestry, animal husbandry, sideline and fishery; import and export of goods; sales of special equipment; general equipment repair; special equipment repair; electrical equipment Equipment repair; motor vehicle repair and maintenance; computer system services; forestry professional and auxiliary activities; ecological resource monitoring; information system integration services; computer software, hardware and auxiliary equipment retail; information technology consulting services; information security equipment sales; information system operation and maintenance services; Internet of Things technical services; mechanical equipment leasing; leasing services (excluding licensed leasing services); agricultural machinery leasing; small and micro bus leasing and operating services