Sell erasable pen

This a paten product,new product,revolutional product.
the handwriting by the erasable ball-pointed pen can be erased and corrected as that of the pencil, and the handwriting can be kept forever once it exceeds the erasable time. The erasable ball-pointed pen can write as pliant and tough as the pen

Offers list from this company:

1. [Sell] Dynamo radio
   
2. [Sell] Sell erasable pen
   
3. [Sell] Sell power inverter