Technology promotion and application services; manufacturing of automobile parts and accessories; manufacturing of hardware products; manufacturing of metal accessories for construction; manufacturing of metal tools; sales of metal products; sales of casting machinery; sales of molds; sales of non-ferrous metal alloys; sales of mechanical parts and components; sales of metal materials; bearings, gears and transmission departments Parts sales; sales of electronic components and electromechanical components and equipment; sales of forgings and powder metallurgy products; metal surface treatment and heat treatment processing; mechanical parts and parts processing; metal processing machinery manufacturing; sales of pneumatic and electric tools; motorcycle parts manufacturing; import and export of goods; import and export of technology; import and export agency