Invisible pen shadowless pen Magic Pen money checking pen secret pen pen can't see words pen Erasable Gel Pens

product Name: invisible pen shadowless pen Magic Pen money detector pen

product No.: HXQ402020

product Size: 13.2 * 1.0cm

product Weight: 13g

color style: Blue

packing method: OPP bag

packing quantity: 1000 pieces

full box size: 54*29 * 29cm

whole box weight: 14Kg

magic hidden ~ shape ~ pen Colorless fluorescent pen ~

cap of a pen part has small light ~ write the words with this pen. After stopping for a while, there is nothing on the paper, just like not written ~

  features:

I can't see the ink when it is written, it is written without any trace, and it is illuminated with DV (finger lights) on your finger, which is undoubtedly revealed. It can also be used for money inspection.