Manufacturing of fasteners; manufacturing of seals; manufacturing of springs; manufacturing of general parts and components; processing of mechanical parts and components; manufacturing of hardware products; manufacturing of metal materials; manufacturing of metal wire ropes and products; manufacturing of automobile parts and accessories; manufacturing of high-speed rail equipment and accessories; manufacturing of navigational aids and related devices; manufacturing of motorcycle parts and accessories; manufacturing of general equipment (excluding manufacturing of special equipment); import and export of goods; non-residential real estate leasing