The highlighter has a fluorescent agent, which generates when it encounters ultraviolet rays (sunlight, fluorescent lamps, and mercury lamps).
The fluorescent effect emits white light, making the color look dazzlingly fluorescent. The fluorescence of the highlighter is not the same as the fluorescence principle of our watches and fluorescent sticks. The fluorescent sticks are radioactive reactions inside. The generated rays excite the phosphors in the periphery so that they emit light without any ultraviolet rays at night. The highlighter will only fluoresce in the presence of ultraviolet light, as long as you put the highlighter's handwriting close to the mosquito lamp and the detector.
TONGLU KINGSON STATIONERY CO.,LTD
Add: No.53-58,Dongmen Rd(N),Fenshui Town,Tonglu County,Hangzhou city.