... belts, pens and pencil cases, trophies and various certificates , works of art, stamps, plaques, etc.;Wood industry: wooden crafts, calligraphy ... (gold, silver, titanium), metal oxide ( any kinds of metal oxide may be); Special surface treatment (phosphate, ... ink (translucent keys, printed products);Epoxy resin (encapsulation of electronic components, insulation layer). 4. Laser marking Samples: ...