Is the unit that processes nano-ceramic coatings toxic?

Hello, nano-ceramic coating is based on inorganic nano-dispersion, and SiO2 is added.

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Al2O3 powder, etc. After blending. Inorganic nano-dispersion is harmless to human body, and there are no toxic substances such as benzene, toluene and xylene contained in ordinary coatings. silicon dioxide

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Al2O3 is abundant in nature. For example, the main component of ordinary river sand is SiO2 _ 2, and the main component of gem is Al _ 2O _ 3. Note that if dust is inhaled into the lungs, it will cause harm to the lungs.