wholesale、 retail: Doors and Windows、 building materials、 Metal materials( No precious metals)、 Metal products、 glass products、 ceramic products、 Aluminum-plastic profiles、 stainless steel profiles、 Hardware accessories、 Stone( No mining)、 Pre-packaged food, Interior decoration、 furnish、 design, graphic design, Plastic steel doors and windows、 Aluminum alloy doors and windows、 stainless steel doors and windows、 Fire-resistant doors and windows、 Fire-resistant doors and windows、 glass curtain wall、 Advertising signs、 Processing、Install、 Sale, Construction machinery and equipment rental, Trade agency services, Energy-saving technology promotion services,Environmentally friendly new material technology promotion services, Import and export of goods and technology( Projects prohibited by national laws and regulations shall not be operated, Businesses restricted by laws and regulations may only be operated after obtaining a license)。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)