General Projects: Mining machinery manufacturing; Special equipment manufacturing( Excluding licensed professional equipment manufacturing); General equipment manufacturing( Excluding special equipment manufacturing); Power transmission, distribution and control equipment manufacturing; Distribution switch control equipment manufacturing; Mechanical and electrical equipment manufacturing; Construction machinery manufacturing; Metallurgical special equipment manufacturing; Mechanical parts、 Parts processing; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery;Agricultural machinery manufacturing; Metal processing machinery manufacturing; Casting machinery manufacturing; Gas compression machinery manufacturing; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Special machinery manufacturing for building materials production; Hydraulic power machinery and components manufacturing; Pneumatic power machinery and components manufacturing; Hydraulic power machinery and components manufacturing; Manufacturing of special equipment for environmental protection; Metal forming machine tool manufacturing; Manufacturing of metal chains and other metal products; Metal structure manufacturing; General parts manufacturing; gas、 Liquid separation and purification equipment manufacturing; Metal cutting machine tool manufacturing; Agricultural machinery rental; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Machinery and equipment rental; General mechanical equipment installation services; Mechanical equipment research and development; electronic、 Mechanical equipment maintenance( Excluding special equipment); Special equipment repair; General equipment repair; Electrical equipment repair; Machinery and equipment sales; Mechanical and electrical equipment sales; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Instrument sales; Mechanical parts、 Parts Sales; Sales of distribution switch control equipment; Sales of metallurgical equipment; Mining machinery sales; Metal product sales; Sales of metal chains and other metal products; Sales of non-metallic minerals and products; Metal tool sales; Recycled resource sales; Sales of special equipment for environmental protection; Import and export of goods; Lime and gypsum sales; Specialty chemical product sales( No hazardous chemicals); Construction machinery sales; Agricultural machinery sales; Metal forming machine tool sales; Casting machinery sales; Gas compression machinery sales; gas、 Liquid separation and purification equipment sales; Sales of hydraulic power machinery and components; Sales of pneumatic power machinery and components; Metal cutting machine tool sales; Metal structure sales; Sales of intelligent power transmission, distribution and control equipment; Agriculture、 Forest、 Mu、 vice、 Sales of specialized fishing machinery; Metal material sales; Building materials sales; Sales of steel bars for construction。( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)