... .3mm, it can mark on a variety of metal and non-metal material, especially for the industry requires high accuracy Auto ... , belts, pens and pencil cases, trophies and various certificates , works of art, stamps, plaques, etc.;Wood industry: wooden crafts, calligraphy ... Rare metals and alloys (gold, silver, titanium), metal oxide ( any kinds of metal oxide may be); Special surface treatment (phosphate, ...