ENT
The new technology of surface refinement of the glass pressed pieces is linked with TCT (Termo Colour Technology) and from the year 2010 is marked as ENT (Estrella Nano Technology).

Ultrathin lacquer layers are under the action of the thermal radiation fixed to the glass surface of the beads. The chemical bond between the glass and the lacquer decorative arrangement is setting in. The highly efficient organic coatings have very good chemical and mechanical resistence.

Advantages:

excellent adhesion to the glass
very good resistance against abrasion and scratching and UV (ultraviolet radiation)
high chemical resistance (against water, vapour alcohol, cosmetics)
stability in alkaline and acidic environment
absence of heavy metals (Cd,Pb,CrVI,Hg)
long life time
ENT (Estrella Nano Technology) represents a wide scale of undiscovered possibilities of the application. Already nowadays this method found out the use outside jewellery to decorate chandelier trimmings, packaging and ornamental glass.
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This is some of the modern day stuff I get to sling through being a bead slinger, now there are some improvements but beware of dazzling terminology :-)