1. This pen's ink is used to mark on leather of the shoe . They are the pens used in the shoe industry to sign the line.

2. The popular color is pink and blue .

3.The automatic evanescent time is 1-2 days after marking without any trace.

Vanish time could be controlled according to customer's requirement.

4. The mark is very easy to be erased by ordinary water.

5. this mainly is for the temporary marking