Manufacture of general-purpose equipment (excluding special equipment); manufacture of generators and generating sets; manufacture of spray guns and similar appliances; manufacture of pumps and vacuum equipment; research and development of mechanical equipment; sales of mechanical equipment; manufacture of agricultural machinery; sales of agricultural machinery; manufacture of plastic products; sales of plastic products; sales of generators and generating sets; sales of pumps and vacuum equipment; research and development of household appliances; sales of household appliances; sales of spray guns and similar appliances; manufacture of electric motors; sales of mechanical and electrical equipment; manufacture of environmental emergency technical equipment; manufacture of construction machinery; sales of construction machinery; technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; import and export of goods; import and export of technologies. Licensed items: manufacture of road motor vehicles.