General Projects: Engineering and technical services( Planning Management、 Survey、 design、 Except supervision), Information technology consulting services, Sales of special electronic equipment, Machinery and equipment sales, Machinery and equipment rental, electronic、 Mechanical equipment maintenance( Excluding special equipment), Metal product sales, Foreign contracting projects, Engineering Management Services, Import and export of goods,Labor Services( Excluding labor dispatch), Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, Manufacturing of special equipment for environmental protection, Special equipment manufacturing( Excluding licensed professional equipment manufacturing), Mechanical and electrical equipment manufacturing, Sales of digital cultural and creative technology equipment, Sales of special equipment for environmental protection, Mechanical and electrical equipment sales, Electrical equipment sales, General mechanical equipment installation services, Environmental sanitation public facilities installation services, Metal tool manufacturing, Fire protection technical services。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations) Licensed Projects: Construction project construction, Construction labor subcontracting, Power transmission、 powered by、 Installation of receiving power facilities、 Maintenance and testing, Construction Engineering Design, Installation, modification and repair of special equipment, Electrical installation services, Gas burner installation、 repair, Residential interior decoration, Professional construction work。( 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.)