Special equipment manufacturing; special equipment installation, modification, and repair; special equipment design; road cargo transport (excluding dangerous goods). General items: steel rolling and processing; metal forming machine tool manufacturing; metal forming machine tool sales; electronic components and electromechanical component equipment manufacturing; electronic components and electromechanical component equipment sales; industrial automatic control system device manufacturing; industrial automatic control system device sales; software development; metal cutting machine tool manufacturing; metal cutting machine tool sales; rubber processing special equipment manufacturing; rubber processing special equipment sales; construction engineering machinery manufacturing; construction engineering machinery sales; general mechanical equipment installation services; mechanical equipment research and development; gear and gear reducer and transmission sales; gear and gear reducer and transmission manufacturing; electric motor manufacturing; motor manufacturing; mechanical and electrical equipment manufacturing; electrical equipment sales; power electronic component sales; electrical equipment repair; mechanical and electrical equipment sales; general cargo warehousing services (excluding hazardous chemicals and other items requiring licensing); storage equipment leasing services; goods import and export; road cargo transport for general cargo vehicles with total mass of 4.5 tons or less (excluding online freight and dangerous goods); information system operation and maintenance services; general equipment repair; special equipment repair; leasing services (excluding licensed leasing services); mechanical equipment leasing; special equipment sales; special equipment leasing.