Purpose: Embossing hologram and be used to produce hologram stickers with hidden logo visible under UV Lights. Description: We have 3 kinds of fluorescent inks ( blue, red and yellow). We can print hidden LOGO by fluorescent inks inside the foil, which can only be visible under UV lights ( for example currency detector or UV lights lamp or pen). The fluorescent ink can not be erased because it is inside the foil, not on the surface of PET. Thickness: 25 micron / 30 micron / 36 micron / 50 micron Width: 170mm or any customized width. Length: The length of one roll is 1500 m if 25 micron. Temperature: Embossing about 105 degrees. MOQ: 25 KG.