Whiteboard pens on the market are mostly oily pens, which can be wiped on the surfaces of smooth and non-absorbent objects such as glass, ceramic tiles, plastic plates and white boards, but cannot be wiped off on rough surfaces such as paper and canvas.

Whiteboard pens contain chemical raw materials, which will have the taste of chemical raw materials. After the ink is solidified, a layer of mucous membrane is formed on the surface, which becomes strip or block particles after wiping, and will not leave stains on the board or eraser. In the field test, finger can be used instead of eraser to measure its effect.