Licensed Projects: Import and export of goods, Technology import and export, Import and export agent( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business items are subject to the approval results.) General Projects: Mining machinery manufacturing, Mining machinery sales, Metal processing machinery manufacturing, General equipment manufacturing( Excluding special equipment manufacturing), Industrial Engineering Design Services, Manufacturing of special equipment for environmental protection, Special equipment repair, Sales of special equipment for environmental protection, Power facility equipment manufacturing, Metallurgical special equipment manufacturing, Construction machinery manufacturing, General mechanical equipment installation services, Machinery and equipment sales, Mechanical equipment research and development, Mechanical parts、 Parts Sales, General parts manufacturing, Mechanical parts、 Parts processing, Metal structure manufacturing, Metal structure sales, Special equipment manufacturing( Excluding licensed professional equipment manufacturing), Engineering Management Services, Building materials sales, Sales of building decoration materials, Construction machinery sales, Undertake the engineering construction business of the head office, Foreign contracting projects, Metal packaging containers and materials manufacturing( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)