1.    Mainly made of plastic,aluminum and steel

2.    ABS top board,east to clean

3.    B means:plastic-steel columns

4.    Guard rail

5.    Raised-edge design

6.    1 bag for waster

7.    1 middle drawer

8.    Plastic-steel column

9.    Roratable dust basket

10. Luxurious noiseless casters(two with brakes)