WE HAVE BEEN ATTEMPTING TO DEVELOP A PHOTOLUMINESCENT (GLOW-IN-THE-DARK). SUBSTANCE THAT CAN BE SUCCESSFULLY SILK SCREEN PRINTED. A SELF-ADHESIVE STICKER (ADHESIVE ON THE BACK) OR. LEAD FREE . A 1MM SEMI-RIGID PLASTIC SIGN WITH OR WITHOUT FOUR PRE-DRILLED HOLES FOR FIXING.
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