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: Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion, Metal product sales, Metal structure sales, Metal product research and development, Metal material sales, Lightweight building materials sales, Door and window sales, Lighting fixture sales, New material technology research and development, Real estate registration agency services, Housing rental, Engineering Management Services, Non-residential real estate rentals, Container leasing services, Container sales,Brand Management, Conference and Exhibition Services, Information technology consulting services, Building materials sales, Sales of building decoration materials, Staircase sales, Domestic trade agent( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)