Licensed Projects: Import and export of goods, Technology import and export( 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: Machinery and equipment sales, Mechanical equipment research and development, Metal product sales, Sales of building decoration materials, Building materials sales, Furniture installation and repair services, furniture sales, General mechanical equipment installation services( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)