Licensed Projects: Construction project construction, Construction labor subcontracting, Construction Engineering Design。( 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: Metal structure manufacturing,Metal material manufacturing, Metal daily necessities manufacturing, Manufacturing of special equipment for environmental protection, Manufacturing of metal signs for transportation and public administration, Metal door and window construction, Door and window manufacturing and processing, Metal structure sales, Air pollution control, Water pollution control, Environmental protection monitoring, Metal product sales, Metal tool sales, Door and window sales, Metal ore sales, Sales of non-metallic minerals and products, Sales of ecological and environmental materials, Sales of environmental emergency technology and equipment, Sales of special equipment for environmental protection, Metal material sales, Mechanical and electrical equipment sales, Machinery and equipment sales, Sales of traffic and public management signs, Hardware wholesale, Hardware product retail, Building materials sales, Solid waste management, Import and export of goods。( In addition to licensing business, Able to independently operate projects that are not prohibited or restricted by laws and regulations)