China Construction Seventh Bureau Fourth Construction Co., Ltd., established on 1987-02-03, Business scope includes construction works,Steel structure engineering,bridge engineering,tunnel Engineering,Municipal public works,Fire facilities engineering,Lifting equipment installation works,Building decoration project,Power Engineering,Mechanical and Electrical Engineering,Building Curtain Wall Engineering,Special Engineering,Construction mechanical and electrical installation engineering,Ancient Architecture,foundation engineering,Electronics and Intelligent Engineering,City and road lighting engineering,Environmental Engineering,Road construction,Water Resources and Hydropower Engineering,Petrochemical Engineering,Construction of airport track engineering;Building materials and construction quality inspection test;plumbing,Sales of hardware materials;Architectural Engineering Design;Landscape Landscaping Design,Construction and Maintenance;Construction Engineering Technology Development,Technical Services,technical consulting,Technology Promotion;architectural design;Raw material and product inspection of prefabricated concrete components;Development of Precast Concrete Elements,Production(branch only),Sales and Installation;light wall material,Development of cement grouting material and other cement products,Production(branch only)and sales;metal components,Concrete prefabricated component connectors and installation parts,Additives for Concrete Production(branch only)and sales;Processing of steel products(branch only)and sales;General cargo road transport;Warehousing Services.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)