1.    Mainly made of plastic,aluminum and steel

2.    ABS top board,easy to clean

3.    Four columns

4.    A means:aluminum columns,B menas:plastic-steel columns

5.    Raised-edge design

6.    Push handle

7.    Plastic-steel column

8.    Centralized lock

9.    3 middle drawers

10. Dust basket with foot pedal

11. 1 big drawer

12. Luxurious noiseless casters(two with brakes)