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The watch gemstone glass engraving mainly uses the ultraviolet laser to have a very high single-pulse energy, which can instantly form an explosion point (vaporization) inside the glass. The left picture shows the logo of the sapphire on the inside of the Rolex watch. The mark is only 0.8mm. .

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Glass marking, inner carving, barcode, plexiglass interference stripe laser anti-counterfeiting.

 

 

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