Sales of mechanical equipment; manufacturing of metal accessories for construction; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; motorcycle parts research and development; automobile parts research and development; hardware product research and development; intelligent unmanned aerial vehicle sales; intelligent unmanned aerial vehicle manufacturing; special operation robot manufacturing; industrial robot installation and maintenance; industrial robot sales; industrial robot manufacturing; hardware product manufacturing; non-ferrous metal alloy manufacturing; metal surface treatment and heat treatment processing; metal tool manufacturing; metal structure manufacturing; metal Manufacture of daily necessities; metal processing machinery manufacturing; non-ferrous metal casting; ferrous metal casting; research and development of metal products; technology import and export; manufacturing of new energy prime mover equipment; sales of new energy automobile electrical accessories; manufacturing of communication equipment; sales of communication equipment; Internet sales (except for the sale of goods requiring licenses); Internet data services; sales of metal products; manufacturing of metal materials; manufacturing of auto parts and accessories; manufacturing of forgings and powder metallurgy products; design and production of civil aircraft parts; civil aircraft maintenance; Internet information services;