The paint of marker pen is volatile and can be used for one-time quick drawing. It is often used for designing articles, advertising slogans, poster drawing or other artistic creation. It can draw thick lines with little change. The box head pen is a kind of marker pen. The marking pen is also divided into water-based ink and oily ink. The water-based ink is similar to the color pen, and is the content without oil essence. The oily ink has an oil essence component, so it has a stimulating taste and is easy to volatilize. If the paint on the toy falls off, you can use a marker to make up the color.