Fig. 1
From: Nano-materials enhanced protectants for natural stone surfaces

Schematic diagram of the preparation of the natural stone surfaces (upper), and treatment of stone surfaces with colloidal dispersion protectant (lower)
From: Nano-materials enhanced protectants for natural stone surfaces
Schematic diagram of the preparation of the natural stone surfaces (upper), and treatment of stone surfaces with colloidal dispersion protectant (lower)