Licensed Projects: Professional construction work, Construction project construction( Projects that require approval according to law, Business activities can only be carried out within the validity period of the license after approval by relevant departments,The specific business items and license period are subject to the approval documents or licenses of relevant departments.) General Projects: Architectural decoration、 Manufacturing of plumbing pipe parts and other metal products for construction, Refrigeration、 Air conditioning equipment sales, Home appliance sales, Home appliance parts sales, Sales of special electronic equipment, Furniture installation and repair services, Import and export agent, 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)