Licensed Projects: Special equipment design; Installation, modification and repair of special equipment; Construction project construction; Construction Engineering Design; Professional construction work; Residential interior decoration; Construction labor subcontracting; Road freight transport( Does not contain dangerous goods)( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business items are subject to the approval results.) General Projects: Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Refrigeration、 Air conditioning equipment manufacturing; Refrigeration、 Air conditioning equipment sales; Intelligent basic manufacturing equipment manufacturing; Sales of intelligent basic manufacturing equipment; Artificial intelligence basic software development; Business、 diet、 Service-specific equipment manufacturing; Business、 diet、 Service-specific equipment sales; Mechanical equipment research and development; Machinery and equipment sales; Mechanical parts、 Parts Sales; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery; Agriculture、 Forest、 Mu、 vice、 Sales of specialized fishing machinery; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Mechanical and electrical equipment manufacturing; Mechanical and electrical equipment sales; Import and export of goods; Technology import and export; Import and export agent; Municipal facilities management( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)