Invisible UV pen
-Material:plastic
-With one UV led light
-logo pinting is welcome
-can be used as dectecting the fake mon

   Invisible UV pen

--Material:plastic

--Led:one UV led light

--Logo printing:can be customized

--Controlled by:on/off sliding switch

--When user Write with the pen on paper, the words are invisible untill the UV light is turned on.

--The UV light also can be used to dectect the fake money.

--Good for promotion,advertising,gift.