Mechanical equipment leasing; technology import and export; sales of electrical machinery equipment; sales of special textile equipment; sales of sewing machinery; sales of industrial control computers and systems; sales of industrial automatic control system devices; sales of intelligent material handling equipment; sales of artificial intelligence hardware; sales of intelligent robots; wholesale of bicycles and spare parts; wholesale of computer software, hardware and auxiliary equipment; sales of electrical equipment; sales of mechanical equipment; sales of mopeds; bicycle manufacturing; motorcycle spare parts Manufacturing; industrial robot installation and maintenance; electrical equipment repair; special equipment repair; Internet of Things equipment manufacturing; industrial control computer and system manufacturing; motor and control system R&D; mechanical and electrical equipment manufacturing; special equipment manufacturing (excluding licensed professional equipment manufacturing); electronic special equipment manufacturing; washing machinery manufacturing; sewing machinery manufacturing; leather, fur and product processing special equipment manufacturing; textile special equipment manufacturing; non-residential real estate leasing;