Civil aircraft component design and production; Inspection and testing services; Special equipment manufacturing; Road cargo transportation (excluding dangerous goods). General items: Gear and gear reduction unit and transmission manufacturing; Gear and gear reduction unit and transmission sales; Special equipment manufacturing (excluding licensed professional equipment manufacturing); General equipment manufacturing (excluding special equipment manufacturing); Metallurgical special equipment manufacturing; Power facility equipment manufacturing; Electrical machinery special equipment manufacturing; Marine supporting equipment manufacturing; Marine engineering equipment manufacturing; Environmental protection special equipment manufacturing; Construction engineering machinery manufacturing; Metal processing machinery manufacturing; Metal structure manufacturing; Mining machinery manufacturing; General component manufacturing; Water turbine and auxiliary machinery manufacturing; Railway locomotive and rolling stock accessory manufacturing; Mold manufacturing; Building materials production special machinery manufacturing; Ferrous metal casting; Mechanical parts and component processing; Metal surface treatment and heat treatment processing; Special equipment repair; General equipment repair; Electronic and mechanical equipment maintenance (excluding special equipment); Industrial engineering design services; Industrial design services; Professional design services; Technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; Engineering technical services (excluding planning management, survey, design, supervision); General mechanical equipment installation services; Mechanical equipment leasing; Non-residential real estate leasing; Goods import and export; Technology import and export.