Invisible UV Pen 1No smelling,water based ink 3>OEM offered Invisible UV Pen Invisible UV Pen1>Tip 0.5,0.8mm,1.0&2.0mm available,with 2year's shelf time;2>UV markers are used for quality iscpectin and secret-marking in textile factory,.3> easily write on textile plastic etc. ink is without smell and and no color! Writings are only ...
