https://www.demarkchina.cn/laser-cleaning-machine/

Laser cleaning uses the difference in the absorption of laser radiation of a specific wavelength between the substrate and the contaminants, or the temperature difference between the melting and boiling points of the two.


After the pollutants absorb the laser energy, they vaporize, vibrate, and instantly expand due to heat, and finally peel off the surface of the substrate to achieve the purpose of cleaning.
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