20pcs/lot magic uv light pen,competitive price, delivery time with 5 days

Magic invisible uv light  Pen
Competitive price

Features: Company confidential letters: protect company trade secrets to outsiders and not easily learned;
Authentication: Managing files and then use the magic invisible document signed tag, can not easily be imitated;
Alternative communication: real content other than in the general content of the average person can not tell;
Dark Reading: Even in the dark, text content can be at a glance;
Message signal: The magic invisible pen leave a message signal, the average person unable to understand thoroughly;
In addition to these features, magic invisible document was also used in the following areas:
SMS note: certain occasions such as Eastern magic with invisible writing pen in the note;
VA Yanchao lamp: Magic Lamp stealth document VA use as UV light money detector;
Invisible Diary: love between couples