1. easy to verify and interesting to view 2. to activate the embossed 3D overt pattern" water "of SMP label film by heating.

Elements of S.M.P

1. easy to verfy and interesting to view: it is visually impressive to watch . for example , to activate the embossed 3D over pattern " water " of SMP label film by heating , " water " will disappear while cover pattern " fire " will be activated to be embossed in just seconds.

2. PCT Patented technologies, FDA approved for good grade packaging SMP label film patent is already being protected in each of PCT'S contracting states, including most of countries in the world , and the SMP material is FAD approved food grade packaging .

3. irreversible : only one time use to verify the SMP security label , and the activation is irreversible .

shape memory polymers security label