The Fourth Engineering Co., Ltd. of CCCC Second Navigation Bureau, established on 2010-05-19, Business scope includes general contracting of highway construction,General Contracting of Municipal Public Works Construction,Professional contracting of bridge engineering,Highway subgrade engineering professional contracting;Construction of water conservancy and hydropower projects;engineering survey,test;Engineering maintenance and reinforcement;Lifting machinery manufacturing,Install,Retrofit and Repair;Steel structure fabrication and installation;Production and processing of building materials;decorative material,building materials,Chemical Products(The above business scope does not contain hazardous chemicals),metallic material(No precious metals),hardware,Electricity sales,General machinery rental;car sales(The state has special approval projects before they can be operated after approval),car repair(branch only),Construction machinery sales and maintenance;storage(Does not contain dangerous goods),cargo handling,Import and export of goods and technology(law,Do not operate where prohibited by law,law,Restricted by laws and regulations, you can only engage in business after obtaining relevant administrative licenses);Production of precast concrete elements,the bridge,the highway,railway,Research and development services in the field of construction engineering,Technical Services,consultation service,the bridge,the highway,railway,Architectural Engineering Design,Real estate operating leasing services,Sales of commercial concrete,Sale of waste materials.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)