General Projects: Metal processing machinery manufacturing; Metal structure manufacturing; Metal product sales; fan、 Fan Manufacturing; Auto parts and accessories manufacturing; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Bearing manufacturing;Agricultural machinery manufacturing; Animal Husbandry Machinery Manufacturing; Pump and vacuum equipment manufacturing; General equipment manufacturing( Excluding special equipment manufacturing); Hydraulic power machinery and components manufacturing; Construction machinery manufacturing; mold manufacturing; bearings、 Gear and transmission component manufacturing; Material handling equipment manufacturing; Import and export of goods; Wood and bamboo processing machinery manufacturing; Metal cutting and welding equipment manufacturing; Casting machinery manufacturing; Special equipment manufacturing( Excluding licensed professional equipment manufacturing); Special machinery manufacturing for building materials production; oil refining、 Manufacturing of special equipment for chemical production; Mechanical parts、 Parts processing; Mechanical and electrical equipment manufacturing; Machinery and equipment sales; Manufacturing of machine tool functional components and accessories; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery; Mining machinery manufacturing; Manufacturing of special equipment for plastic processing; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Textile special equipment manufacturing; Manufacturing of special equipment for agricultural and sideline food processing; Mechanical equipment research and development。( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license) Licensed Projects: Construction labor subcontracting; Construction project supervision; Construction Engineering Survey; Construction Engineering Design; Installation, modification and repair of special equipment; Professional construction work; Power transmission、 powered by、 Installation of receiving power facilities、 Maintenance and testing。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business projects are subject to the approval documents or licenses of relevant departments.)