1. Material: high quality cold rolled steel;
2. Surface: environmental friendly electrostatic powder painting;
3. Extra smooth surface without any welding; 
4. Salvagnini P4 flexible bending center makes the frame reaches 4.5mm;
5: Structure; knock down or assembled, depend on your requirement; convenient  transportation;
6. Package: high quality 5-7 layers standard export carton, wooden case is available;