Licensed Projects: Construction project construction, Construction Engineering Design, Professional construction work, Category I value-added telecommunications services, Category II value-added telecommunications services, Construction Engineering Survey, Building demolition work( Except blasting operations), Installation, modification and repair of special equipment, Roadbed and pavement maintenance work, Highway management and maintenance。( 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.) General Projects: Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion,Earthwork construction, Engineering and technical services( Planning Management、 Survey、 design、 Except supervision), Rental Services( No licensed rental services), Construction machinery and equipment rental, Machinery and equipment rental, Information technology consulting services, Engineering cost consulting business, Engineering Management Services, Special equipment manufacturing( Excluding licensed professional equipment manufacturing), bearings、 Gear and transmission parts sales, Foreign contracting projects, Landscaping project construction, General mechanical equipment installation services, Industrial Engineering Design Services, Special equipment repair, Metal structure sales, Metal structure manufacturing, Sales of steel bars for construction, Sales of photovoltaic equipment and components, Photovoltaic power generation equipment leasing, Construction machinery sales, Traffic safety、 Controlled special equipment manufacturing, Construction machinery manufacturing, Manufacturing of electrical signal equipment, Highway and water transport engineering testing and inspection services, Road freight transport station operation, Parking service。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations)