New material technology research and development; new material technology promotion services; metal product research and development; pneumatic and electric tool manufacturing; automobile parts and accessories manufacturing; motorcycle parts manufacturing; general parts manufacturing; bearings, gears and transmission parts manufacturing; metal seal manufacturing; metal packaging containers and materials manufacturing; metal tool manufacturing; mechanical parts, parts processing; hardware product wholesale; mechanical equipment sales; bearings, gears and transmission parts sales; mold manufacturing; mold sales; metal product sales; rubber products sales; packaging materials and products sales; office supplies sales; office equipment sales; electronic product sales