Our patent technology OCRE (Optical Chemical Relief Eteching)is one kind of DOVIDs, the it can contain very large volume of information. The information can be a shape , words, or even ciphertext. Which will prevent the counterfeiters from attempt to make the fake labels.

The different between OCRE and normal laser covert image are 3 main points.

(1) Normal laser covert image can only be seen in a certain angle laser beam, while OCRE have no requirement for the laser beam angle. That means, you can see the covert image no matter the laser beam come from which angle.

(2) OCRE is not only a optical device. That is to say, if anyone attempt to use the 2 step copy.( use a laser beam to point at the place where the covert image hide , and make an exposure on a photosensitive plate) , the Chemical character of OCRE will result in a large ratio of information loss, as the result , the 2 step copy of OCRE will never have any chance.

(3) Normal laser covert image will be color-changing as hologram. OCRE is a diamond glitter without any color-changing. It can be easily distinguished from Hologram.