Joke Collection Website - Bulletin headlines - How to clear the mark?

How to clear the mark?

1. Mix 96% alcohol,11/ammonia water and water at the ratio of1/to remove the mark. Ammonia will change the color of fabric, so it should be controlled in proper amount to avoid discoloration.

2. Any one of sodium dithionite, bleaching powder or hydrogen peroxide can effectively remove the traces of markers.

3. The pigment of marker is volatile, which is used for quick drawing at one time. It is often used to design articles, advertising slogans, poster drawing or other artistic creation. You can draw thick lines with little change.