CH6001--permanent uv active invisible pen,read by

permanent uv active invisible pen,read by uv light,ideal for anti-counterfeiting or business gift With this incredibleUV pen, write invisiblemessage on any dry surface andread bythe special ultraviolet light (from colorless to highlight blue). The UV light causes the ink to fluoresce in the visible region. The use of such a pen was part of the plot in The Da Vinci Code by Dan Brown. Use this pen to mark unknown samples for students in the laboratory. This new product is sure to become one of our most popular... everyone we've showed it to, wants one! bullet shaped nib keychain uv torch Can print client logo Various designs, size and colors are available Good quality and competitive prices OEM services and welcome We supply good service from producing to delivery May packing with bulk or blister card