Sell Invisible Luminous Pen Invisible Highlighter Creative UV Magic Ink with Lamp best price

What is an invisible pen? An invisible pen refers to a pen whose written handwriting cannot be seen under normal light, and can only be seen under the irradiation of an ultraviolet lamp. Generally used to mark items or write sentences that you don't want to be easily seen. Instructions First use this pen to write anywhere, and then use ultraviolet radiation, heating and other effects to show the handwriting. Note: Do not write too deep, otherwise it will leave a print on the paper. The main function 1. You can write any of your secrets and will not be seen by anyone. 2. You can mark your items without destroying the appearance of the object, and you can easily distinguish it from other identical items. 3. Make invisible marks when holding various exhibitions to sort out the order of your equipment and items. 4. You can make a short-term tattoo on your face or arm to become the focus of disco and pub. 5, as a gift to your friend, give him (her) an unexpected surprise. 6, as a promotional gift for your customers, let customers accept surprises while deepening their impression of your company. Color: shipped in random colors, the color of the pen case is different, and the refill is invisible. Specifications: length 13.2cm