Research and development of metal products; research and development of hardware products; manufacturing of auto parts and accessories; manufacturing of motorcycle parts; retail of auto parts; manufacturing of forgings and powder metallurgy products; sales of forgings and powder metallurgy products; manufacturing of pneumatic and electric tools; sales of pneumatic and electric tools; manufacturing of hardware products; manufacturing of metal tools; retail of hardware products Sales of metal tools; sales of metal products; manufacturing of safety and fire-fighting metal products; manufacturing of metal daily necessities; sales of fire-fighting equipment; manufacturing of security equipment; sales of security equipment; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; technology import and export; import and export agency; import and export of goods.