Invisible UV pen,promotion pen
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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.