Highlighters are often used for drawing and marking. When selecting, you can fold two pieces of translucent report paper or typing paper together, write a few words on the top paper with a fluorescent pen, pay attention to the weight and cadence, and then turn it over to check. The high-quality fluorescent pen should have no color penetration on the back of the top paper, and there should be no handwriting on the next paper.

Highlighter is a marker pen produced in recent years. It uses thicker and lighter ink to cover key parts for marking. After marking, it will not block the text at a glance. The fluorescent pen has fluorescent agent. When it encounters ultraviolet light (sunlight, fluorescent lamp and mercury lamp are more), it will produce fluorescent effect and emit white light, which makes the color look dazzling fluorescent. It is often used for office study.