Tenax Proseal Nano on Quartzite 

Impregnating sealer ideal for Quartzite, Granite, Marble, Agglomerates, Stone, and Terracotta
Tenax Proseal Nano is a solvent-based impregnating sealer. Excellent on glossy and polished surfaces, even those with higher absorption rates. Proseal Nano penetrates and settles in the micropores of the material, protecting it from all kinds of dirt without altering the natural breathability of the material.
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