Research and development of metal products; sales of metal products; sales of metal tools; manufacturing of metal tools; leasing of non-residential real estate; leasing of mechanical equipment; research and development of automotive parts; manufacturing of automotive parts and accessories; import and export of goods; import and export of technologies; wholesale of hardware products; manufacturing of hardware products; research and development of hardware products; manufacturing of molds; sales of molds; manufacturing of communication equipment; sales of communication equipment; wholesale of computer software, hardware, and auxiliary equipment; manufacturing of computer software, hardware, and peripheral equipment; road freight transportation of general cargo vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods).