What Is A Highlighter Pen

The fluorescent pen is a pen that is produced in recent years. It uses thick and lighter ink to cover the key parts as a mark. After the mark is made, it is clear at a glance without covering the text. The fluorescent pen has a fluorescent agent. It encounters ultraviolet rays (more sunlight, sunlight, and mercury lamps) will produce fluorescence effects, which emit white light, which makes the color look dazzling fluorescent feeling, which is often used in office learning.